- Today we're going back to a 17th century philosopher 00:00:01.33\00:00:03.23 that we've actually talked about in the past, 00:00:03.23\00:00:05.83 but now we're gonna look at his lasting legacy 00:00:05.83\00:00:08.44 and why a lot of people are finally starting to realize 00:00:08.44\00:00:11.31 just how wrong this guy was 00:00:11.31\00:00:14.48 and how right the Bible is, by comparison. 00:00:14.48\00:00:17.75 [upbeat music] 00:00:17.75\00:00:20.42 [upbeat music] 00:00:26.59\00:00:29.26 I know that to ordinary, everyday people like me, 00:00:38.83\00:00:41.54 this idea that some philosophers actually agonize 00:00:41.54\00:00:45.34 over the possibility they don't exist 00:00:45.34\00:00:48.28 seems kind of foolish because, well, 00:00:48.28\00:00:50.68 to most of us, existence seems kind of obvious. 00:00:50.68\00:00:54.82 I mean, if there was any question at all, 00:00:54.82\00:00:57.42 it would've been resolved 00:00:57.42\00:00:58.89 the day I placed my stepladder on an icy sidewalk 00:00:58.89\00:01:01.89 like an idiot and climbed up to the roof. 00:01:01.89\00:01:04.69 The moment I reached the top rung, 00:01:04.69\00:01:06.90 I suddenly felt the bottom of the ladder 00:01:06.90\00:01:08.86 start to slip out from under me. 00:01:08.86\00:01:10.47 And I knew full well that in a matter of seconds, 00:01:10.47\00:01:13.50 I'd be experiencing a rather significant amount of pain. 00:01:13.50\00:01:16.74 You know, that brief moment where you realize 00:01:16.74\00:01:19.04 you're about to get hurt and you've got no choice 00:01:19.04\00:01:21.38 but to ride out the experience? 00:01:21.38\00:01:23.71 Let me say, the moment I hit the sidewalk 00:01:23.71\00:01:26.68 and I hit it so hard, I bent the ladder, 00:01:26.68\00:01:29.18 let me tell you, I had no question 00:01:29.18\00:01:31.65 that my physical existence is very real. 00:01:31.65\00:01:35.39 And it occurs to me 00:01:35.39\00:01:36.79 that when you come across these religious cults 00:01:36.79\00:01:38.93 who insist that the physical world is just an illusion 00:01:38.93\00:01:42.03 and that things like illness don't actually exist, 00:01:42.03\00:01:46.10 what in the world goes through those people's minds 00:01:46.10\00:01:48.04 when they fall off the roof? 00:01:48.04\00:01:49.50 Ooh, this isn't real. 00:01:49.50\00:01:50.61 It's just in my head. 00:01:50.61\00:01:51.77 The pain's not real. 00:01:51.77\00:01:52.84 My broken jaw isn't real. 00:01:52.84\00:01:55.21 Just how long can somebody sustain 00:01:55.21\00:01:57.11 that thought when they've got to go to the emergency room 00:01:57.11\00:02:00.32 to have a medical professional set their broken arm? 00:02:00.32\00:02:03.45 Just a few years ago, 00:02:04.62\00:02:06.02 I had to endure a rather uncomfortable surgical procedure 00:02:06.02\00:02:08.72 that involved feeding guide wires 00:02:08.72\00:02:10.33 through my back, into one of my internal organs. 00:02:10.33\00:02:13.33 And as usual, they had some trouble anesthetizing me. 00:02:13.33\00:02:16.70 I guess I'm just one of those lucky people 00:02:16.70\00:02:18.50 with red roots in his beard who doesn't really respond 00:02:18.50\00:02:22.04 to anesthetic, and at least I don't really twilight. 00:02:22.04\00:02:25.34 And so I was awake for the whole procedure, 00:02:25.34\00:02:27.88 and I've got to tell you, again, 00:02:27.88\00:02:29.64 that disabused me of any notion 00:02:29.64\00:02:31.98 that the inquisition is over. 00:02:31.98\00:02:34.42 So here's the question. 00:02:34.42\00:02:36.99 Was all that awful discomfort just an illusion, 00:02:36.99\00:02:39.69 or does my body actually exist? 00:02:39.69\00:02:42.52 It seems like a simple question 00:02:42.52\00:02:44.16 until you consider the fact that the sensation 00:02:44.16\00:02:46.90 of pain actually happens here upstairs in your brain. 00:02:46.90\00:02:50.40 I mean, it seems like your knee hurts 00:02:50.40\00:02:52.63 or your elbow, but in reality, 00:02:52.63\00:02:55.00 that's your brain telling you something is wrong 00:02:55.00\00:02:57.37 with your knee or your elbow. 00:02:57.37\00:02:59.81 Ask a paraplegic if his knee hurts, 00:02:59.81\00:03:01.74 and he's probably gonna tell you no 00:03:01.74\00:03:04.21 because the signal no longer makes its way to his brain. 00:03:04.21\00:03:08.08 This is also the reason we actually know 00:03:09.08\00:03:11.05 the answer to the question. 00:03:11.05\00:03:12.82 If a tree falls over in the forest 00:03:12.82\00:03:14.96 and nobody's around to hear it, 00:03:14.96\00:03:16.69 does it still make a noise? 00:03:16.69\00:03:18.76 And the answer's no, 00:03:18.76\00:03:20.73 because sounds are just your brain's interpretation 00:03:20.73\00:03:23.26 of disturbances in the air. 00:03:23.26\00:03:25.33 If there are no eardrums present at the moment 00:03:25.33\00:03:27.94 the tree hits the ground, there are no sound waves, 00:03:27.94\00:03:31.47 so there is no sound. 00:03:31.47\00:03:34.21 That's why truly deaf people hear absolutely nothing. 00:03:34.21\00:03:37.61 The link from their eardrum 00:03:37.61\00:03:39.58 to their brain has been compromised. 00:03:39.58\00:03:42.65 The same thing happens when you get older. 00:03:42.65\00:03:44.92 Look, the world around you isn't getting fuzzier as you age. 00:03:44.92\00:03:49.02 It's just that the capacity of your eyes 00:03:49.02\00:03:50.99 to perceive it has diminished 00:03:50.99\00:03:53.09 and the signal to your brain has been compromised. 00:03:53.09\00:03:56.33 This is one of the reasons 00:03:57.30\00:03:58.60 that a lot of philosophers have struggled 00:03:58.60\00:04:00.27 with the nature of reality. 00:04:00.27\00:04:02.17 They realize that there's something of a disconnect 00:04:02.17\00:04:04.77 between our minds and the physical world. 00:04:04.77\00:04:07.78 The people who write those strange movies like "The Matrix" 00:04:07.78\00:04:11.41 aren't just coming up with a brand new plot 00:04:11.41\00:04:13.28 that nobody's ever thought of before. 00:04:13.28\00:04:15.95 They're tapping into the angst of a long line 00:04:15.95\00:04:18.55 of deep thinkers who have wondered 00:04:18.55\00:04:20.49 if the world around us is actually real, 00:04:20.49\00:04:22.96 if we can actually trust the evidence of our senses. 00:04:22.96\00:04:27.66 And of course, the number one name that most people 00:04:27.66\00:04:30.37 think of when it comes to that question is Rene Descartes, 00:04:30.37\00:04:34.10 who gave us the phrase, "I think, therefore I am," 00:04:34.10\00:04:37.77 or if you wanna sound sophisticated, 00:04:37.77\00:04:39.97 you can say it in poorly pronounced Latin like me, 00:04:39.97\00:04:42.98 [speaking foreign language]. 00:04:42.98\00:04:44.98 Now, I know that I've talked about Descartes 00:04:44.98\00:04:47.78 on another program two or three years ago, 00:04:47.78\00:04:49.95 but I was thinking about him again just the other day, 00:04:49.95\00:04:52.82 and sometimes that's how I decide 00:04:52.82\00:04:54.66 what we're gonna talk about on the show. 00:04:54.66\00:04:56.73 And the work in question today 00:04:56.73\00:04:58.73 is Descartes' qua Dei or "Meditations," 00:04:58.73\00:05:02.00 which was the first full-fledged philosophical work 00:05:02.00\00:05:04.93 I ever read when I was a kid. 00:05:04.93\00:05:07.17 I mean, if you don't count the popular works 00:05:07.17\00:05:09.70 like "The Hitchhiker's Guide to the Galaxy" 00:05:09.70\00:05:11.71 or "Zen and the Art of Motorcycle Maintenance." 00:05:11.71\00:05:15.24 I think I was 17 when I first read Descartes. 00:05:15.24\00:05:18.28 And back in those days, 00:05:18.28\00:05:19.71 I certainly was not a practicing Christian. 00:05:19.71\00:05:22.38 I mean, I had a Christian background, 00:05:22.38\00:05:24.62 but I wasn't living it. 00:05:24.62\00:05:26.35 And you know, 00:05:26.35\00:05:27.62 I went and tried to find my beat-up old copy 00:05:27.62\00:05:29.72 of Descartes in my library for today 00:05:29.72\00:05:31.59 so I could pull it out and show it to you, 00:05:31.59\00:05:33.23 but I think it's in my storage locker somewhere. 00:05:33.23\00:05:36.20 So I've got an iPad. 00:05:36.20\00:05:38.37 And as weird as this sounds, 00:05:38.37\00:05:40.67 Descartes actually played a pretty significant role 00:05:40.67\00:05:43.10 in my spiritual development 00:05:43.10\00:05:44.74 because at the tender age of 17, 00:05:44.74\00:05:47.28 as I was reading him, I found myself getting excited 00:05:47.28\00:05:50.41 by the fact that he was making a reasonable argument 00:05:50.41\00:05:53.48 for the existence of God in kind of a roundabout way. 00:05:53.48\00:05:57.29 Now, today, I recognize 00:05:58.15\00:05:59.92 that Descartes' thinking has some rather large gaps. 00:05:59.92\00:06:03.02 There are intellectual problems, but at 17, 00:06:03.02\00:06:06.59 he blew me away. 00:06:06.59\00:06:08.30 I found myself thinking that God might actually be real. 00:06:08.30\00:06:12.20 And while my teenage self didn't really get around 00:06:12.20\00:06:14.57 to adopting Christianity at that time, 00:06:14.57\00:06:17.87 there is no question that Descartes actually helped me 00:06:17.87\00:06:20.48 take my first steps down that road. 00:06:20.48\00:06:22.51 And so his work, well, it holds a place 00:06:22.51\00:06:25.41 of honor in my library. 00:06:25.41\00:06:27.08 It's one of those 20 or so books that most people have 00:06:27.08\00:06:31.15 that proved to be game changers in your life. 00:06:31.15\00:06:34.12 So getting back to the subject at hand, 00:06:34.12\00:06:36.52 our ability to know that our existence is real, 00:06:36.52\00:06:40.20 well, Descartes is pretty famous 00:06:40.20\00:06:41.66 for moving the needle on that one. 00:06:41.66\00:06:43.60 And again, we're walking into an esoteric realm, 00:06:43.60\00:06:46.40 a place where philosophers usually hang out 00:06:46.40\00:06:49.00 by themselves while the rest of us 00:06:49.00\00:06:50.67 are relatively happy living here in the real world. 00:06:50.67\00:06:54.51 But still, it's important that we recognize 00:06:54.51\00:06:57.51 what the eggheads in the ivory towers are thinking about 00:06:57.51\00:07:00.28 because their ideas really do have a way 00:07:00.28\00:07:02.65 of eventually trickling down to the minds 00:07:02.65\00:07:04.52 of everyday people, whether it's through college classes 00:07:04.52\00:07:07.92 or even through popular TV shows. 00:07:07.92\00:07:10.16 I mean, here we are, living in a world that continues 00:07:11.53\00:07:14.00 to struggle with ideas that we all used to take for granted. 00:07:14.00\00:07:17.37 For example, once upon a time, 00:07:17.37\00:07:19.33 we all understood the concept of truth. 00:07:19.33\00:07:22.34 We had an objective view of the world, 00:07:22.34\00:07:24.64 and we understood that two contradictory things 00:07:24.64\00:07:27.64 cannot possibly be true at the very same time. 00:07:27.64\00:07:30.88 To put it the way Aristotle did, 00:07:30.88\00:07:32.91 A cannot equal non A. 00:07:32.91\00:07:35.62 But today, we don't speak like that anymore. 00:07:35.62\00:07:37.99 We don't speak about the truth. 00:07:37.99\00:07:40.12 Instead, people talk about my truth and your truth, 00:07:40.12\00:07:43.02 and we've even coined a new word to describe 00:07:43.02\00:07:45.56 what we think might be true, 00:07:45.56\00:07:48.20 but we're scared to say it's true, 00:07:48.20\00:07:49.80 so we use the word truthiness. 00:07:49.80\00:07:52.60 It's a way of saying it's true 00:07:52.60\00:07:53.84 without being too definitive about it. 00:07:53.84\00:07:56.30 So yeah, some of the bad ideas 00:07:56.30\00:07:58.87 that come from those ivory towers, 00:07:58.87\00:08:00.88 ideas that were mostly harmless when they first popped up 00:08:00.88\00:08:03.75 in a classroom, they can have a profound impact 00:08:03.75\00:08:07.02 on the way that all of us think and behave over time. 00:08:07.02\00:08:09.82 And I honestly believe that we're currently witnessing 00:08:09.82\00:08:12.59 some of the negative impact of choosing to believe 00:08:12.59\00:08:14.99 that nothing is actually objectively true. 00:08:14.99\00:08:18.29 So here's what we're gonna do today. 00:08:19.29\00:08:21.03 I've got to take a break in a moment, 00:08:21.03\00:08:22.80 but let me set the table for our study with something 00:08:22.80\00:08:25.07 that happened back in 1619, 00:08:25.07\00:08:27.80 one year before the Pilgrims landed Plymouth Rock. 00:08:27.80\00:08:31.47 On the night of November 10th, 00:08:31.47\00:08:32.87 Descartes had a series of three different dreams 00:08:32.87\00:08:36.01 and they were game changers for him. 00:08:36.01\00:08:38.21 He'd been wrestling with the idea of truth 00:08:38.21\00:08:40.55 and how you and I could know if something is actually true. 00:08:40.55\00:08:43.92 And when he went to bed that night, 00:08:43.92\00:08:46.42 his subconscious started to answer those questions. 00:08:46.42\00:08:50.33 And I'll be right back after this 00:08:50.33\00:08:52.43 to tell you what he learned. 00:08:52.43\00:08:54.30 [upbeat chiming] 00:08:54.30\00:08:56.93 [upbeat music] 00:08:56.93\00:08:58.23 - [Narrator] Here at the Voice of Prophecy, 00:08:58.23\00:08:59.63 we're committed to creating top-quality programming 00:08:59.63\00:09:01.44 for the whole family, 00:09:01.44\00:09:02.80 like our audio adventure series Discovery Mountain. 00:09:02.80\00:09:06.07 Discovery Mountain is a bible-based program for kids 00:09:06.07\00:09:08.94 of all ages and backgrounds. 00:09:08.94\00:09:10.88 Your family will enjoy the faith-building stories 00:09:10.88\00:09:13.68 from this small mountain summer camp, pent down, 00:09:13.68\00:09:16.52 with 24 seasonal episodes every year 00:09:16.52\00:09:19.02 and fresh content every week. 00:09:19.02\00:09:21.19 There's always a new adventure just on the horizon. 00:09:21.19\00:09:24.43 - On November 10th, 1619, Rene Descartes 00:09:27.20\00:09:30.53 had what you might call a hat trick of dreams, 00:09:30.53\00:09:33.67 three disturbing nightmares in a row. 00:09:33.67\00:09:36.27 In the first dream, he found himself crippled 00:09:36.27\00:09:38.47 and struggling to walk, and the wind was blowing him around 00:09:38.47\00:09:41.38 as he tried to get about. 00:09:41.38\00:09:43.24 He noticed that the other people around him 00:09:43.24\00:09:45.48 didn't have the same problem. 00:09:45.48\00:09:47.18 They could walk just fine, 00:09:47.18\00:09:48.72 and he tried to make his way inside a chapel 00:09:48.72\00:09:51.35 to pray in this dream, but he couldn't get there. 00:09:51.35\00:09:54.46 I mean, you've had dreams like that too. 00:09:54.46\00:09:56.59 You can't walk. 00:09:56.59\00:09:58.03 So Descartes became afraid 00:09:58.03\00:10:00.00 that a malicious demon was leading him astray. 00:10:00.00\00:10:03.37 That was the first dream. 00:10:03.37\00:10:05.13 In the second dream, he hears a loud noise 00:10:05.13\00:10:07.70 and becomes enveloped in this shower of sparks. 00:10:07.70\00:10:10.87 When he wakes up, he sees his fireplace 00:10:10.87\00:10:12.97 and he figures that the crackling 00:10:12.97\00:10:14.21 of the wood caused the dream. 00:10:14.21\00:10:16.78 Then he had a third dream 00:10:16.78\00:10:18.75 where he sees a book sitting on the table. 00:10:18.75\00:10:21.28 Here's the way he described it. 00:10:21.28\00:10:23.39 "After a short time," he wrote, 00:10:23.39\00:10:25.15 I go back to sleep once more 00:10:25.15\00:10:26.79 and find myself in a third dream. 00:10:26.79\00:10:29.16 In front of me, on a table, is a book. 00:10:29.16\00:10:31.63 Having opened it, I see that it is a dictionary. 00:10:31.63\00:10:34.73 Then I notice a second book, this one, a poetry anthology. 00:10:34.73\00:10:38.53 I flick through it and immediately 00:10:38.53\00:10:40.20 come upon the Latin verse: 'Quad vitae sectabor iter,' 00:10:40.20\00:10:44.87 Which path in life will I choose?" 00:10:44.87\00:10:48.58 The two books, he figured, were symbols 00:10:48.58\00:10:50.45 for different things. 00:10:50.45\00:10:51.95 The dictionary, of course, was a collection of facts, 00:10:51.95\00:10:55.22 and that, he reckoned, was the nature of this world, 00:10:55.22\00:10:58.59 of living here. 00:10:58.59\00:11:00.22 Throughout our lives, 00:11:00.22\00:11:01.76 you and I gather all kinds of data through our five senses. 00:11:01.76\00:11:03.83 We collect facts we believe to be true. 00:11:03.83\00:11:07.13 But over time, those same facts 00:11:07.13\00:11:08.93 kind of devolve into a massive pile 00:11:08.93\00:11:10.93 of disconnected thoughts. 00:11:10.93\00:11:12.47 And what most people want is to find a unifying principle 00:11:12.47\00:11:16.64 that ties all that information together 00:11:16.64\00:11:19.11 so that the world begins to make sense. 00:11:19.11\00:11:22.51 But the book of poetry, in Descartes' opinion, 00:11:22.51\00:11:25.78 that was the music, the beauty of the created universe, 00:11:25.78\00:11:29.18 and it represented the unity 00:11:29.18\00:11:30.99 that holds this physical world together. 00:11:30.99\00:11:33.66 Incidentally, the Greeks would've 00:11:34.62\00:11:36.09 called that unifying principle the Logos. 00:11:36.09\00:11:39.23 It's where we get the word logic. 00:11:39.23\00:11:41.60 And you'll notice that when the disciple John begins 00:11:41.60\00:11:43.80 his gospel, he identifies Jesus as the Logos. 00:11:43.80\00:11:48.00 Now, we think that's because some of the early Christians 00:11:48.00\00:11:51.61 were starting to dabble in Hellenistic thinking 00:11:51.61\00:11:54.01 and adopting some really bad Greek ideas. 00:11:54.01\00:11:57.61 Those people would've said that the creator 00:11:57.61\00:11:59.61 and the redeemer were two different beings. 00:11:59.61\00:12:02.12 They were borrowing that from pagan philosophy. 00:12:02.12\00:12:04.75 So John sets the record straight in his gospel 00:12:04.75\00:12:08.32 by telling us that Jesus is the Logos. 00:12:08.32\00:12:11.16 He's both the Redeemer and the Creator, 00:12:11.16\00:12:14.46 and he's the principle 00:12:14.46\00:12:15.70 that holds the whole universe together. 00:12:15.70\00:12:17.70 It's an idea that Paul backs up 00:12:17.70\00:12:19.40 in his Letter to the Colossians, 00:12:19.40\00:12:22.47 but let's get back to Descartes and his dreams. 00:12:22.47\00:12:25.24 When he woke up from that third nightmare, 00:12:25.24\00:12:27.34 it really shook him. 00:12:27.34\00:12:29.31 The dictionary was cold, hard science, 00:12:29.31\00:12:32.05 and the poetry was wisdom and philosophy 00:12:32.05\00:12:34.45 or what he might have called revelation and enthusiasm. 00:12:34.45\00:12:39.32 It's tempting to summarize them as facts and feelings, 00:12:39.32\00:12:43.12 but that would be oversimplifying 00:12:43.12\00:12:44.69 what was going on upstairs in Descartes' noodle. 00:12:44.69\00:12:47.30 Now, normally, most of us don't put a lot of stock in dreams 00:12:47.30\00:12:51.00 unless you're Nebuchadnezzar getting a message from God. 00:12:51.00\00:12:54.50 But for Descartes, these nocturnal images 00:12:54.50\00:12:56.50 kept bothering him. 00:12:56.50\00:12:57.97 They were like your tongue 00:12:57.97\00:12:59.51 returning to a broken tooth at the back of your mouth 00:12:59.51\00:13:01.91 over and over and over, 00:13:01.91\00:13:03.61 and it was that that produced Descartes' most famous work, 00:13:03.61\00:13:07.68 his "Meditations on Philosophy." 00:13:07.68\00:13:11.02 Now, I'm not gonna bore you with all the details, 00:13:11.02\00:13:13.22 but maybe let me try to summarize his key argument. 00:13:13.22\00:13:16.39 Here's the way he begins, 00:13:16.39\00:13:17.93 and I'm guessing this is gonna resonate 00:13:17.93\00:13:19.96 with quite a few of you. 00:13:19.96\00:13:21.06 Here's what he says. 00:13:21.06\00:13:22.46 "Some years ago, I noticed how many false things 00:13:22.46\00:13:25.03 I had accepted as true in my childhood, 00:13:25.03\00:13:27.74 and how doubtful were the things 00:13:27.74\00:13:29.30 that I subsequently built on them, 00:13:29.30\00:13:31.37 and therefore that, once in a lifetime, 00:13:31.37\00:13:34.38 everything should be completely overturned 00:13:34.38\00:13:36.58 and I should begin again from the most basic foundations 00:13:36.58\00:13:39.68 if I ever wish to establish anything firm 00:13:39.68\00:13:42.22 and durable in the sciences." 00:13:42.22\00:13:44.65 Of course, that's really pretty good advice. 00:13:45.79\00:13:47.92 There does come a time in everybody's life 00:13:47.92\00:13:50.53 when you're gonna want to assess 00:13:50.53\00:13:51.89 what you've always been told 00:13:51.89\00:13:54.10 and ask yourself if it's all true. 00:13:54.10\00:13:56.13 I actually went through that process 00:13:56.13\00:13:57.57 when I was in my early 20s, 00:13:57.57\00:13:59.27 and it ended with me believing 00:13:59.27\00:14:01.10 that the Bible really is inspired by God. 00:14:01.10\00:14:04.87 Now, sometimes when I was a little kid, 00:14:04.87\00:14:06.81 I used to wonder, how do I really know 00:14:06.81\00:14:09.28 that I'm not just a brain on a table in a science class, 00:14:09.28\00:14:12.41 out on an alien planet somewhere, 00:14:12.41\00:14:14.72 and that my day-to-day experience isn't just the 00:14:14.72\00:14:17.42 product of some alien kid poking my brain with an electrode? 00:14:17.42\00:14:21.59 Descartes essentially asked the same question, 00:14:21.59\00:14:23.83 but in his version, he used a malicious demon. 00:14:23.83\00:14:27.00 How could he know for sure 00:14:27.00\00:14:28.36 that his sensory experience wasn't being caused 00:14:28.36\00:14:31.27 by an evil demon who was trying to deceive him? 00:14:31.27\00:14:34.50 So here's what he did. 00:14:34.50\00:14:36.17 In order to figure out what's real, 00:14:36.17\00:14:38.34 he set about doubting everything. 00:14:38.34\00:14:41.18 That's what he meant when he said he was going back 00:14:41.18\00:14:43.08 to basic foundations. 00:14:43.08\00:14:44.51 He needed to put everything to the test. 00:14:44.51\00:14:47.32 So to illustrate, let's take something 00:14:47.32\00:14:49.18 that most of us believe is true, 00:14:49.18\00:14:50.92 the fact that we have two arms, most of us do. 00:14:50.92\00:14:55.02 When I look down at my body, there they are, 00:14:55.02\00:14:57.16 and when I look in the mirror, there they are again. 00:14:57.16\00:15:00.63 But how do I actually know that? 00:15:00.63\00:15:03.16 Is a mirror really solid evidence? 00:15:03.16\00:15:07.20 How do you know it's not just an elaborate illusion? 00:15:07.20\00:15:10.17 Well, if you have any doubts, Descartes said, 00:15:10.17\00:15:13.17 "That belief, if you doubt it, it's got to go." 00:15:13.17\00:15:16.01 What he really wanted was to find something 00:15:16.01\00:15:18.01 that was so unquestionable, 00:15:18.01\00:15:19.55 so certain that it left no room for doubt. 00:15:19.55\00:15:23.32 And as you might guess, at the end of the day, 00:15:23.32\00:15:25.52 he wasn't left with much 00:15:25.52\00:15:26.82 because you can doubt just about anything. 00:15:26.82\00:15:29.32 So he ended up rejecting all the evidence of his senses, 00:15:29.32\00:15:32.33 which left him with nothing but his thoughts. 00:15:32.33\00:15:35.13 And that's when he wondered, 00:15:35.13\00:15:37.07 "How do I even know that doubt is real? 00:15:37.07\00:15:39.37 What if my doubts are also being planted 00:15:39.37\00:15:41.44 in my head by that demon?" 00:15:41.44\00:15:42.87 And that's when the lights went on. 00:15:42.87\00:15:45.71 If he was doubting his doubts, well, 00:15:45.71\00:15:48.44 he was still doubting. 00:15:48.44\00:15:50.05 So it seemed like the ability to question stuff in his mind, 00:15:50.05\00:15:54.22 well, that was certain. 00:15:54.22\00:15:55.95 So then he went a little bit further 00:15:55.95\00:15:57.32 and asked, "How do I know that I'm thinking? 00:15:57.32\00:15:59.52 What if that's an illusion?" 00:15:59.52\00:16:01.12 But again, it occurred to him 00:16:01.12\00:16:02.32 that if he was thinking about thinking, 00:16:02.32\00:16:03.99 well, then he's thinking. 00:16:03.99\00:16:05.33 And so that also seemed undoubtable. 00:16:05.33\00:16:08.96 Here's what he actually wrote in his "Discourse on Method," 00:16:08.96\00:16:11.67 and this is the thing that made Descartes famous. 00:16:11.67\00:16:14.10 He said, "I resolved to pretend that all the things 00:16:14.10\00:16:17.67 that had ever entered my mind were no more true 00:16:17.67\00:16:20.18 than the illusions of my dreams. 00:16:20.18\00:16:22.54 But immediately afterward, 00:16:22.54\00:16:24.15 I noticed that while I wanted thus to think that everything 00:16:24.15\00:16:26.78 was false, it necessarily had to be the case 00:16:26.78\00:16:29.68 that I, who was thinking this, was something, 00:16:29.68\00:16:32.85 and noticing that this truth, 00:16:32.85\00:16:34.69 I think, therefore I am, 00:16:34.69\00:16:37.06 was so firm and so assured 00:16:37.06\00:16:39.89 that all of the most extravagant suppositions 00:16:39.89\00:16:42.20 of the skeptics were incapable of shaking it. 00:16:42.20\00:16:45.13 I judged that I could accept it without scruple 00:16:45.13\00:16:47.90 as the first principle of the philosophy I was seeking." 00:16:47.90\00:16:51.97 Now, I know that some of you are wondering 00:16:51.97\00:16:54.38 what in the world that has to do with you 00:16:54.38\00:16:56.01 because you haven't wasted much time wondering if you exist. 00:16:56.01\00:17:00.25 But there's an unexpected consequence 00:17:00.25\00:17:02.48 to this philosophy that has affected most of us, 00:17:02.48\00:17:05.32 and it boils down to his systematic separation 00:17:05.32\00:17:08.36 of the mind and the body. 00:17:08.36\00:17:10.36 What Descartes was left with 00:17:10.36\00:17:12.06 was a kind of dualism where the physical world 00:17:12.06\00:17:14.93 and the world of the mind became two different things. 00:17:14.93\00:17:18.13 We can probably thank another philosopher, 00:17:18.13\00:17:20.47 Gottfried Leibniz, for that because he said 00:17:20.47\00:17:23.94 that if two things are gonna be identical, 00:17:23.94\00:17:25.91 they have to be identical in every single detail. 00:17:25.91\00:17:29.01 That idea was already being circulated 00:17:29.01\00:17:31.35 when Descartes started to philosophize, 00:17:31.35\00:17:33.42 and obviously, from his perspective, 00:17:33.42\00:17:35.65 mind and body were now two different things. 00:17:35.65\00:17:38.09 He could count on the existence of his mind, 00:17:38.09\00:17:40.62 but he couldn't count on the existence 00:17:40.62\00:17:43.29 of the physical world. 00:17:43.29\00:17:45.29 It wasn't a new idea 00:17:45.29\00:17:46.83 because the pagans had been teaching that for thousands 00:17:46.83\00:17:49.10 of years and the Greeks became famous for promoting it. 00:17:49.10\00:17:53.07 But as we'll see when we come back 00:17:53.07\00:17:54.40 from a really quick break, 00:17:54.40\00:17:56.44 there's a serious problem buried in there. 00:17:56.44\00:17:59.01 I'll be right back after this. 00:17:59.01\00:18:01.31 [upbeat chiming] 00:18:01.31\00:18:04.38 [melancholic music] 00:18:04.38\00:18:05.65 - [Narrator] Life can throw a lot at us. 00:18:05.65\00:18:07.22 Sometimes we don't have all the answers, 00:18:07.22\00:18:10.62 but that's where the Bible comes in. 00:18:10.62\00:18:12.52 [upbeat music] 00:18:12.52\00:18:13.82 It's our guide to a more fulfilling life. 00:18:13.82\00:18:16.16 Here at the Voice of Prophecy, 00:18:16.16\00:18:17.66 we've created the Discover Bible Guides 00:18:17.66\00:18:19.83 to be your guide to the Bible. 00:18:19.83\00:18:21.43 They're designed to be simple, easy to use, 00:18:21.43\00:18:23.90 and provide answers to many of life's toughest questions, 00:18:23.90\00:18:26.90 and they're absolutely free, 00:18:26.90\00:18:28.97 so jump online now or give us a call 00:18:28.97\00:18:31.27 and start your journey of discovery. 00:18:31.27\00:18:34.04 - The ideas that Rene Descartes became famous for 00:18:34.04\00:18:36.81 are sometimes called substance dualism 00:18:36.81\00:18:39.78 or Cartesian dualism in honor of his last name. 00:18:39.78\00:18:44.25 It's the idea that your mind can exist without your body, 00:18:44.25\00:18:47.69 that it's a separate entity all by itself. 00:18:47.69\00:18:50.56 in this way of thinking, 00:18:50.56\00:18:51.86 the body is just a meat locker for your ghost. 00:18:51.86\00:18:54.60 It can't think or exist just by itself. 00:18:54.60\00:18:57.90 Now, this way of thinking leads to something 00:18:57.90\00:18:59.60 that philosophers call the mind-body problem, 00:18:59.60\00:19:03.10 which questions how the mind 00:19:03.10\00:19:04.71 and body actually relate to each other. 00:19:04.71\00:19:07.51 And again, I know, 00:19:07.51\00:19:08.81 it sounds like a lot of academic gobbledygook, 00:19:08.81\00:19:11.01 but hear me out, because according to Descartes, 00:19:11.01\00:19:14.05 one of our most prominent Western philosophers, 00:19:14.05\00:19:17.42 the mind and body are two separate things. 00:19:17.42\00:19:20.32 But then our day-to-day experience tells us, 00:19:20.32\00:19:22.52 every day, that's not really true. 00:19:22.52\00:19:25.63 Really bad news, for example, 00:19:25.63\00:19:27.40 is comprehended upstairs in your mind, 00:19:27.40\00:19:29.90 but the tears that come to your eyes, 00:19:29.90\00:19:31.67 that's a physical response. 00:19:31.67\00:19:33.27 So there really is a connection between your mind 00:19:33.27\00:19:35.94 and your body, and there's no way 00:19:35.94\00:19:38.17 they're completely separate. 00:19:38.17\00:19:40.74 Likewise, I can stand at a door 00:19:40.74\00:19:42.71 and imagine that it's opening all day long, 00:19:42.71\00:19:45.58 but it's not going to happen. 00:19:45.58\00:19:46.92 It's not gonna open 00:19:46.92\00:19:48.32 unless you know, doing magic tricks like Uri Geller. 00:19:48.32\00:19:51.92 You can picture it, you can visualize it. 00:19:51.92\00:19:54.99 But to make the door open, 00:19:54.99\00:19:56.46 my brain is gonna have to tell my hand 00:19:56.46\00:19:58.19 to reach out and grab the doorknob. 00:19:58.19\00:20:00.36 The mind has to rely on the body to get things done. 00:20:00.36\00:20:04.77 And I know, a lot of us were raised on the idea 00:20:04.77\00:20:07.70 that the mind is actually independent of the body 00:20:07.70\00:20:09.97 and that we can float off after we die 00:20:09.97\00:20:12.11 and live some kind of disembodied experience. 00:20:12.11\00:20:14.91 That's really the essence of dualism. 00:20:14.91\00:20:18.35 But let's think about that for a moment. 00:20:18.35\00:20:21.18 If that's really true, if you can completely separate mind 00:20:21.18\00:20:25.72 and body, then how do you explain what happens to people 00:20:25.72\00:20:29.09 who take psychoactive drugs like alcohol or LSD? 00:20:29.09\00:20:34.20 Those drugs operate on physical principles. 00:20:34.20\00:20:37.43 They change your brain chemistry 00:20:37.43\00:20:39.60 and they alter how you perceive the world. 00:20:39.60\00:20:42.84 These substances dampen the reliability of your senses, 00:20:42.84\00:20:46.24 but that's not the only thing that happens. 00:20:46.24\00:20:48.91 They actually change the way you think. 00:20:48.91\00:20:51.28 I mean, just visit a courtroom sometime 00:20:51.28\00:20:53.68 and listen to the number of people who try 00:20:53.68\00:20:55.72 to excuse their awful behavior by blaming alcohol. 00:20:55.72\00:21:00.69 I wasn't thinking straight, your honor. 00:21:01.82\00:21:03.29 Well, why not? 00:21:03.29\00:21:04.39 Why weren't you thinking straight? 00:21:04.39\00:21:06.23 If the mind is completely separated from the body, 00:21:06.23\00:21:08.93 then how did molecules of alcohol change the way you 00:21:08.93\00:21:14.00 think? We all know that drunk human beings will do things 00:21:15.30\00:21:16.91 they would never consider doing when they're sober. 00:21:16.91\00:21:20.01 Alcohol lowers your inhibitions. 00:21:20.01\00:21:22.18 And the crime stats prove it. 00:21:22.18\00:21:24.65 According to one study I was reading 00:21:24.65\00:21:26.21 just a little while ago, 00:21:26.21\00:21:27.75 53% of the murders committed in the United States 00:21:27.75\00:21:30.99 were fueled by liquor. 00:21:30.99\00:21:32.89 57% of the rapes, 47% of the robberies 00:21:32.89\00:21:36.83 and 60% of physical assaults. 00:21:36.83\00:21:40.03 They were motivated or at least emboldened 00:21:40.03\00:21:43.16 by liquor consumption. 00:21:43.16\00:21:44.93 And tragically, something like 80% 00:21:44.93\00:21:47.87 of suicides involve alcohol. 00:21:47.87\00:21:50.84 So clearly, alcohol dramatically changes the way you think. 00:21:50.84\00:21:55.81 So now let's ask ourselves. 00:21:56.71\00:21:58.98 How could it be that the mind and body 00:21:58.98\00:22:00.72 are two separate things? 00:22:00.72\00:22:02.95 The reasonable answer is they're not. 00:22:02.95\00:22:06.59 And wouldn't you know it? 00:22:06.59\00:22:08.22 That's the description of human nature 00:22:08.22\00:22:10.03 you actually find in the Bible. 00:22:10.03\00:22:12.19 Contrary to popular thinking, 00:22:12.19\00:22:14.00 the Bible does not separate the mind and body. 00:22:14.00\00:22:17.27 And I know, for a lot of us, that's a big pill to swallow, 00:22:17.27\00:22:20.30 but hear me out. 00:22:20.30\00:22:22.20 I'm reminded of something Jesus said. 00:22:22.20\00:22:24.44 He was talking to the Pharisees who were really upset 00:22:24.44\00:22:28.04 because he was healing somebody, 00:22:28.04\00:22:30.51 and unbelievably, they started telling people 00:22:30.51\00:22:32.85 that Jesus was healing people through the power of a demon. 00:22:32.85\00:22:36.62 So now listen to how Jesus responded. 00:22:36.62\00:22:39.09 He said, "You brood of vipers!" 00:22:39.09\00:22:41.82 I like some of Jesus' responses. 00:22:41.82\00:22:44.06 "You brood of vipers! 00:22:44.06\00:22:46.36 How can you speak good when you are evil? 00:22:46.36\00:22:49.06 For out of the abundance of the heart," 00:22:49.06\00:22:51.43 he's talking about the mind now, 00:22:51.43\00:22:53.54 "the mouth speaks. 00:22:53.54\00:22:55.74 The good person, out of his good treasure, 00:22:55.74\00:22:58.17 brings forth good, and the evil person, 00:22:58.17\00:23:00.24 out of his evil treasure, brings forth evil." 00:23:00.24\00:23:03.78 Okay, it's not really rocket science 00:23:03.78\00:23:06.08 to discover that your thoughts affect your behavior, 00:23:06.08\00:23:09.62 but let's consider this from the perspective 00:23:09.62\00:23:11.49 of substance dualism. 00:23:11.49\00:23:13.66 The Bible presents your mind as a fundamental part 00:23:13.66\00:23:16.52 of your body, not something that exists entirely on its own. 00:23:16.52\00:23:21.56 What happens when somebody develops 00:23:22.63\00:23:23.97 one of those horrible degenerative diseases 00:23:23.97\00:23:25.90 like Alzheimer's or dementia? 00:23:25.90\00:23:28.44 At the root, it's a physical problem. 00:23:28.44\00:23:31.44 It's the breakdown of the brain, 00:23:31.44\00:23:33.68 and there's no question 00:23:33.68\00:23:35.08 that the physical breakdown is changing the person. 00:23:35.08\00:23:38.65 Their personality changes, 00:23:38.65\00:23:40.72 their ability to comprehend and analyze 00:23:40.72\00:23:42.75 the world begins to dissolve. 00:23:42.75\00:23:45.25 What's going on? 00:23:45.25\00:23:46.86 A distinctly physical problem 00:23:46.86\00:23:49.12 is altering the mind. 00:23:49.12\00:23:51.43 This is precisely why so many modern philosophers 00:23:51.43\00:23:54.20 are now rejecting Descartes' dualism. 00:23:54.20\00:23:57.07 It doesn't make sense. 00:23:57.07\00:23:58.63 It doesn't match reality, 00:23:58.63\00:24:01.14 and it doesn't match what the Bible teaches either. 00:24:01.14\00:24:03.64 According to this book, 00:24:03.64\00:24:05.01 that all important connection 00:24:05.01\00:24:06.41 between your mind and your body 00:24:06.41\00:24:07.88 ends up being exactly who you are. 00:24:07.88\00:24:11.28 Your thoughts change your behavior 00:24:11.28\00:24:13.35 and your behavior changes your thoughts. 00:24:13.35\00:24:16.15 I'll be right back after this. 00:24:16.15\00:24:18.52 [upbeat chiming] 00:24:18.52\00:24:21.46 [beasts roaring] 00:24:21.46\00:24:22.76 - [Narrator] Dragons, beasts, cryptic statues, 00:24:22.76\00:24:26.59 Bible prophecy can be incredibly vivid and confusing. 00:24:26.59\00:24:31.13 If you've ever read Daniel and Revelation 00:24:31.13\00:24:33.34 and come away scratching your head, you are not alone. 00:24:33.34\00:24:36.37 Our free, Focus on Prophecy guides are designed 00:24:36.37\00:24:39.31 to help you unlock the mysteries of the Bible 00:24:39.31\00:24:41.58 and deepen your understanding of God's plan 00:24:41.58\00:24:44.01 for you and our world. 00:24:44.01\00:24:45.65 Study online or request them by mail 00:24:45.65\00:24:48.08 and start bringing prophecy into focus today. 00:24:48.08\00:24:51.69 - There's a really interesting passage 00:24:51.69\00:24:53.82 in the Book of Proverbs. 00:24:53.82\00:24:55.12 It kind of underlines what I was talking about 00:24:55.12\00:24:57.49 with mind-altering chemicals. 00:24:57.49\00:24:59.59 Just listen to what this says, 00:24:59.59\00:25:00.80 and you can find this in Proverbs 31. 00:25:00.80\00:25:03.80 It says, "It is not for kings, O Lemuel, 00:25:03.80\00:25:06.80 it is not for kings to drink wine, 00:25:06.80\00:25:08.60 or for rulers to take strong drink, 00:25:08.60\00:25:10.77 lest they drink and forget what has been decreed 00:25:10.77\00:25:13.61 and pervert the rights of all the afflicted." 00:25:13.61\00:25:16.95 So again, let's think about this. 00:25:16.95\00:25:19.08 How in the world can we believe 00:25:19.08\00:25:21.02 that the mind is somehow independent of the physical body 00:25:21.02\00:25:23.39 when we know that the mind can be dramatically altered 00:25:23.39\00:25:26.69 through physical means? 00:25:26.69\00:25:28.26 The wise man tells the king that rulers cannot afford 00:25:28.26\00:25:30.83 to consume alcohol because it will make them 00:25:30.83\00:25:33.16 forget God's moral precepts, 00:25:33.16\00:25:34.83 and they will quote, "Pervert the rights of the afflicted." 00:25:34.83\00:25:38.13 Their ability to think has been compromised 00:25:38.13\00:25:41.00 by a physical reality. 00:25:41.00\00:25:43.41 So do I think Descartes was right? 00:25:43.41\00:25:46.14 Well, yes and no. 00:25:46.14\00:25:47.71 I believe he was right when he observed two things. 00:25:47.71\00:25:50.28 First, your senses can deceive you. 00:25:50.28\00:25:53.05 Secondly, we do know that we actually exist. 00:25:53.05\00:25:57.39 More than that, 00:25:57.39\00:25:58.65 we can know that our existence is meaningful. 00:25:58.65\00:26:01.09 Of course, I've gotta give credit where credit is due. 00:26:01.09\00:26:03.53 Descartes was one of the first people to help me realize 00:26:03.53\00:26:06.83 that the Christian faith is perfectly reasonable. 00:26:06.83\00:26:10.80 But dualism? 00:26:10.80\00:26:12.47 A split between the mind and the body? 00:26:12.47\00:26:15.87 No, as a student of the Bible, 00:26:15.87\00:26:18.31 that's something I just can't accept. 00:26:18.31\00:26:20.38 The scriptures give us no reason to believe 00:26:20.38\00:26:22.74 that the mind is something other than your brain. 00:26:22.74\00:26:25.41 That's why brain injuries can change your personality 00:26:25.41\00:26:28.15 and physical diseases can compromise 00:26:28.15\00:26:30.69 your cognitive capacity. 00:26:30.69\00:26:33.05 Your ability to think clearly declines 00:26:33.05\00:26:35.62 as your physical body goes. 00:26:35.62\00:26:38.46 You know, when Moses died, the Bible says 00:26:38.46\00:26:40.43 that "his eye was undimmed and his vigor unabated." 00:26:40.43\00:26:44.60 And of course, the reason it points that out 00:26:44.60\00:26:46.23 is because that was highly unusual. 00:26:46.23\00:26:48.50 It's considered somewhat miraculous. 00:26:48.50\00:26:51.34 The rest of us, 00:26:51.34\00:26:52.54 we lose a lot as we get older. 00:26:52.54\00:26:54.84 My stamina isn't what it was when I was 18, 00:26:54.84\00:26:57.51 and my eyesight isn't the same either. 00:26:57.51\00:26:59.88 And as much as I hate to admit it, 00:26:59.88\00:27:01.45 my mental recall isn't as sharp as it used to be. 00:27:01.45\00:27:05.22 I mean, I can't even begin to count the number 00:27:05.22\00:27:07.46 of times I walk through the house to go get something, 00:27:07.46\00:27:09.62 but before I get there, I forgot what I was looking for. 00:27:09.62\00:27:13.33 And if time should last, 00:27:13.33\00:27:14.56 I know full well that my mental acuity 00:27:14.56\00:27:17.00 is going to fall apart. 00:27:17.00\00:27:18.53 Why? 00:27:18.53\00:27:20.07 Because my thoughts take place in my biological hardware, 00:27:20.07\00:27:23.71 and as my body wears down, so does my cognitive ability. 00:27:23.71\00:27:27.64 In the beginning, the Bible teaches, 00:27:27.64\00:27:29.14 God created us with a decidedly physical existence. 00:27:29.14\00:27:32.15 Go back and read it. 00:27:32.15\00:27:33.78 Then when Christ came to live among us, 00:27:33.78\00:27:35.52 he actually retained his human physical existence 00:27:35.52\00:27:37.75 for all time. 00:27:37.75\00:27:39.05 You find that in the encounter with Thomas 00:27:39.05\00:27:41.32 at the end of Luke. 00:27:41.32\00:27:42.69 Jesus rose with a physical body. 00:27:42.69\00:27:45.39 And when God restores us, 00:27:45.39\00:27:46.76 he brings us back to what we had in the beginning. 00:27:46.76\00:27:48.70 And Earth made new a place that was physical 00:27:48.70\00:27:52.07 and God said "was very good." 00:27:52.07\00:27:55.57 Maybe it's time to pick up this old book 00:27:55.57\00:27:57.44 and see just how much it agrees 00:27:57.44\00:27:59.57 with everything we're learning about this world we live in. 00:27:59.57\00:28:02.58 Thanks for joining me. 00:28:02.58\00:28:03.95 I'm Shawn Boonstra, and this has been "Authentic." 00:28:03.95\00:28:07.68 [upbeat music] 00:28:07.68\00:28:10.32 [upbeat music] 00:28:16.42\00:28:19.09