00:00:13,544 --> 00:00:16,006I never think of the future.200:00:19,615 --> 00:00:22,013I find that it comes soon enough.300:00:32,443 --> 00:00:36,816In Spring 1951 the mostfamous scientist in the world400:00:37,216 --> 00:00:41,136celebrated his 72nd birthday.500:00:41,404 --> 00:00:44,850A horde of photographers were waiting to take his picture. 600:00:45,343 --> 00:00:48,095Hey Professor, hey Professor.700:00:50,298 --> 00:00:56,431And when he appeared that day he created one of themost endearing images of the twentieth century.800:01:03,153 --> 00:01:07,106Playful, irreverent, enigmatic and brilliant:900:01:08,816 --> 00:01:13,772Albert Einstein was the physicist withthe fame of an 'A' list movie star.1000:01:16,126 --> 00:01:21,182When I was young all I wanted and expected from life1100:01:21,724 --> 00:01:27,599was to sit in some corner doing my workwithout the public paying attention to me.1200:01:28,658 --> 00:01:32,641And now see what has become of me.1300:01:36,857 --> 00:01:43,564But behind that public image the greatest scientiston earth was facing professional ridicule.00:01:51,184 --> 00:01:56,808This is the extraordinary story of howAlbert Einstein spent the last years of his life1500:01:57,577 --> 00:02:01,896battling to destroy the consequences of his own work.1600:02:02,795 --> 00:02:07,735It was a quest that would end in his failure and isolation.1700:03:15,581 --> 00:03:18,419Professor Einstein?1800:03:21,588 --> 00:03:23,556Professor Einstein?1900:03:29,686 --> 00:03:32,080Hello Professor Einstein.2000:03:40,629 --> 00:03:44,427Miss... My notes?2100:03:45,671 --> 00:03:51,006Professor, I... OK, but just for a while.2200:03:55,394 --> 00:03:56,723Thank you.2300:04:03,793 --> 00:04:10,286Albert Einstein, the greatest scientist of ourage, was nearly at the end of his life.2400:04:17,394 --> 00:04:19,724Great theories were behind him,2500:04:20,926 --> 00:04:25,536but as he lay on his deathbed he continuedworking on what he hoped would be2600:04:26,096 --> 00:04:28,187his greatest theory of all.2700:04:29,144 --> 00:04:31,935It would have been the holy grail of science.2800:04:32,381 --> 00:04:33,920It would have been the philosopher's stone,2900:04:34,280 --> 00:04:37,718it would have been the crowningachievement of all scientific endeavours3000:04:38,104 --> 00:04:40,755ever since humans walked the face of the earth.3100:04:46,089 --> 00:04:50,283He had been working on this last greattheory for more than thirty years,3200:04:50,986 --> 00:04:56,373but throughout this period many scientiststhought that he was wasting his time.3300:04:56,750 --> 00:04:59,346In his later years the rest of the physics community3400:04:59,944 --> 00:05:05,850looked upon Einstein as somebody who hadcompletely lost touch with modern research3500:05:06,582 --> 00:05:09,273and almost you know like an old fuddy-duddy like a relic.3600:05:27,189 --> 00:05:31,176The tragedy was that to many,Einstein's last great theory3700:05:31,879 --> 00:05:38,488was doomed before it even began, and it wasall because of his personal prejudices.3800:05:42,219 --> 00:05:46,902He could not accept that the consequencesof his own work clashed with his belief3900:05:47,801 --> 00:05:51,167of how God had built our universe.00:05:56,638 --> 00:06:00,180Einstein's odyssey began here in Berne in 1905,4100:06:00,836 --> 00:06:04,688when he was on the verge of his greatest scientific triumphs.4200:06:05,835 --> 00:06:08,328Because it was in this small Swiss City4300:06:08,776 --> 00:06:12,239that he began to make the most extraordinary discoveries.4400:06:16,469 --> 00:06:19,574Well every day he would leave this,this flat in order to go to his work,4500:06:20,306 --> 00:06:23,017he would go underneath the famous clock tower in Berne,4600:06:23,824 --> 00:06:27,250and it's interesting to wonder whetheror not this extraordinary clock-tower4700:06:28,193 --> 00:06:30,596with its depictions of the moon and the sun on it,4800:06:31,002 --> 00:06:33,267whether or not this actually inspired him in some way,4900:06:33,810 --> 00:06:39,948or subliminally perhaps to explore andrevolutionise concepts of space and time.5000:06:51,939 --> 00:06:56,042And what was truely extraordinary aboutthis amazing period in Einstein's life5100:06:56,521 --> 00:06:59,333was that he had dropped outof academic life completely.5200:07:00,177 --> 00:07:02,463No university would give him a job.00:07:03,151 --> 00:07:07,301Instead during this time he was workingas a patents clerk, third class,5400:07:08,039 --> 00:07:11,857evaluating the latest inventions in this office.5500:07:14,707 --> 00:07:17,950So it's amazing when you think thatEinstein was working at the patent office5600:07:18,558 --> 00:07:23,678on applications as diverse as a mechanical vegetable peeler, or, or dynamos.5700:07:24,411 --> 00:07:30,058And yet in his spare time he's working on theories which will change the way we look at the universe.5800:07:34,665 --> 00:07:37,315Conferring with only a handful of friends,5900:07:39,705 --> 00:07:42,550he began writing scientific papers.6000:07:47,585 --> 00:07:51,749He searched for answers to questionsthat most would never even have asked;6100:07:52,457 --> 00:07:54,933he called them his thought experiments.6200:07:55,503 --> 00:07:57,308One of Einstein's thought experiments was6300:07:57,840 --> 00:08:01,820'What would I see if I movedalong beside a beam of light?'6400:08:03,495 --> 00:08:07,366Einstein once said that he's not interestedin this phenomenon or that phenomenon,65he wants to know, If I were Godhow would I create a universe?6600:08:17,188 --> 00:08:20,176In a few short months beginning in the Spring of 1905 6700:08:20,897 --> 00:08:27,251he started penning the most extraordinary scientific ideas, about the nature of the universe.6800:08:29,259 --> 00:08:34,042And it would culminate in one of the mostfamous papers in scientific history.6900:08:37,097 --> 00:08:41,748And this is it, it's called'On the electrodynamics of moving bodies'.7000:08:45,470 --> 00:08:49,757It quoted no references andread like a stream of consciousness.7100:08:50,571 --> 00:08:53,457It was the start of his special theory of relativity 7200:08:54,250 --> 00:08:59,860and it would overturn nothing less thaneveryone's understanding of time.7300:09:12,648 --> 00:09:14,569Am I keeping good time?7400:09:17,644 --> 00:09:19,495Good time professor.7500:09:28,283 --> 00:09:32,217Before Einstein, it was thought thatthe passage of time was unchanging.7600:09:37,674 --> 00:09:41,149It ran at the same pace, no matterwhere you were in the universe.77Or how fast you were travelling.7800:09:52,241 --> 00:09:54,683Time and space were incredibly simple concepts.7900:09:55,362 --> 00:09:57,463The, the concepts you'd recognisefrom everyday experience.8000:09:58,505 --> 00:10:03,205Space was just the arena in which things happened, and time just ticked along.8100:10:04,050 --> 00:10:06,729So wherever you were in the universe,whatever speed you were moving,8200:10:07,428 --> 00:10:09,742your watch ticked along at the same rate.8300:10:12,304 --> 00:10:15,891But Einstein discovered time was not unchanging,8400:10:16,925 --> 00:10:21,395the rate at which time passed depended onthe speed at which you were travelling.8500:10:21,622 --> 00:10:24,653Einstein thought that time was more like a river, 8600:10:25,241 --> 00:10:29,702that speeds up, slows down, meandersits way across the cosmos.8700:10:30,333 --> 00:10:35,357In other words twelve o'clock on earth is not necessarily twelve o'clock throughout the universe.8800:10:43,778 --> 00:10:49,044So while everyone else thought that the passage of time was the one unvarying thing in our universe, 8900:10:51,231 --> 00:10:53,165Einstein argued otherwise.9000:10:57,889 --> 00:11:01,221He believed it was the speedof light that was always constant.9100:11:04,703 --> 00:11:08,303But if that was the case it meant something bizarre.9200:11:13,592 --> 00:11:17,972The only way in the laws of physics for thespeed of light always to appear to be the same9300:11:18,807 --> 00:11:24,064is if everything else changed relativeto speed, including time.9400:11:27,112 --> 00:11:33,179In other words the passage of time, the onething everyone thought was constant, was relative. 9500:11:34,084 --> 00:11:39,380It meant for instance that the faster youtravelled, the slower time would run.9600:11:48,005 --> 00:11:51,989This was Einstein's special theory of relativity.9700:11:55,780 --> 00:11:57,677But he didn't stop there.9800:11:59,933 --> 00:12:04,606Two months later he published a threepage supplement to his theory.9900:12:05,599 --> 00:12:08,553In those pages Einstein linked energy and matter10000:12:09,532 --> 00:12:14,927and in doing so derived the most famous mathematical equation of all time.10100:12:15,621 --> 00:12:21,598What Einstein showed with E = MC squared is thatthere's a symmetry between energy and matter.10200:12:22,076 --> 00:12:26,103And think about it matter is something we can touch,our bodies are made out of matter,10300:12:26,658 --> 00:12:32,331we can taste it, we can smell it but energy, energyis much more nebulous, much more defused10400:12:32,830 --> 00:12:38,924and the genius of Einstein was that he was able toshow that they really are two aspects of the same thing. 10500:12:55,296 --> 00:12:59,542This tiny equation would one day explainhow at the very beginning of time,10600:13:00,362 --> 00:13:04,832just after the big bang energy was turned into matter. 10700:13:05,612 --> 00:13:09,659It explained how the sun could create vast power10800:13:10,409 --> 00:13:12,273from a tiny amount of fuel.10900:13:18,262 --> 00:13:20,824And it opened scientists' eyes11000:13:21,354 --> 00:13:25,641to the lethal power locked up inside every atom.11100:13:34,750 --> 00:13:41,619From this tiny formula would comeboth creation and destruction.11200:13:43,384 --> 00:13:45,385When these papers were published in 190511300:13:46,380 --> 00:13:49,536they must've come like a bolt out ofthe blue for the scientific community11400:13:50,077 --> 00:13:52,639because Einstein was a complete unknown at this point. 11500:13:53,033 --> 00:13:56,379And yet immediately they realisedthat they were revolutionary.11600:13:56,998 --> 00:13:59,536And effectively at this point Einstein had arrived. 11700:14:05,125 --> 00:14:08,665For anyone else these achievementswould have been enough,11800:14:09,710 --> 00:14:12,731but Einstein had even bigger ambitions.11900:14:17,459 --> 00:14:19,754Every break he's practicing with that thing.12000:14:24,350 --> 00:14:26,416A hundred times against a wall.12100:14:28,001 --> 00:14:30,223If he drops one, he starts all over.12200:14:30,596 --> 00:14:32,866I admire his persistence.12300:14:33,581 --> 00:14:36,312You don't sometimes feel like giving up?12400:14:36,790 --> 00:14:38,917Only when I have the answer.12500:14:39,149 --> 00:14:40,593And does everything have an answer?12600:14:41,523 --> 00:14:42,703I don't know.12700:14:43,174 --> 00:14:47,727But I think that there maybe an answer to everything.12800:14:53,194 --> 00:14:56,520While the world was coming toterms with special relativity,12900:14:57,362 --> 00:15:00,345Einstein had already moved on by himself,13000:15:00,939 --> 00:15:05,662to tackle the work of the great seventeenthcentury scientist Isaac Newton.13100:15:06,410 --> 00:15:09,005In particular his laws of gravity.13200:15:16,331 --> 00:15:21,132Legend has it that Newton was inspired towards hislaw of gravity by seeing an apple fall in an orchard.13300:15:21,675 --> 00:15:24,170Now Einstein was inspired By a similar thought.13400:15:27,457 --> 00:15:31,408He thought what happens if I drop an apple,but when I drop it I'm in a falling lift13500:15:31,865 --> 00:15:37,421then surely the apple will float in front of my face, it will look as though gravity has been cancelled out.13600:15:44,956 --> 00:15:47,611Gravity is the force that dominates our universe,13700:15:48,486 --> 00:15:51,446it holds huge planets and moons in their orbits.13800:15:54,681 --> 00:15:57,765And it keeps our feet firmly planted on the ground.13900:16:00,772 --> 00:16:04,883But though Newton's laws described theeffects of gravity with great accuracy,14000:16:09,551 --> 00:16:13,233no one could actually work out what caused it.14100:16:21,642 --> 00:16:25,919Einstein's great insight was that allmassive bodies like planets and stars14200:16:26,465 --> 00:16:28,156bent space and time,14300:16:28,768 --> 00:16:34,610and it is this curvature of space and time thatcauses what we experience as gravity.14400:16:35,698 --> 00:16:39,830It has become known as his general theory of relativity. 14500:16:41,334 --> 00:16:45,346Einstein's real breakthrough with generalrelativity was to give a reason for gravity.14600:16:45,910 --> 00:16:52,059Einstein's picture of gravity was that massive objects like stars and galaxies curved space and time,14700:16:52,781 --> 00:16:56,741and then other objects moving throughthat curvature feel gravity.14800:16:57,193 --> 00:17:00,410Gravity in a sense is the curvature of space and time. 14900:17:10,372 --> 00:17:14,237General relativity was Einstein's greatest triumph,15000:17:14,604 --> 00:17:21,744it brought him fame that no scientistexperienced before or has seen since.15100:17:23,783 --> 00:17:26,904In my view general relativityreally was Einstein's master piece.15200:17:27,230 --> 00:17:30,006Well the word genius is bandedaround in physics a lot but15300:17:30,306 --> 00:17:34,793in Einstein's case, it really appliesto general relativity I think.15400:17:35,280 --> 00:17:37,423That's where his reputation comes from.15500:17:48,165 --> 00:17:52,026Though Einstein's theories of timeand gravity may seem strange,15600:17:53,220 --> 00:17:59,238his work remains fundamental to the understanding of our universe today.15700:18:05,914 --> 00:18:08,243Planes, relying on the global positioning system, 15800:18:08,874 --> 00:18:14,002take Einstein's calculations of timeinto account to navigate accurately.15900:18:16,078 --> 00:18:20,665Deep space satellites have to compensatefor Einstein's reading of gravity.16000:18:28,219 --> 00:18:34,458The work springing from this period in Einstein's life has helped us build the modern world.16100:18:42,643 --> 00:18:48,113But despite this, another piece ofwork, also completed back in 1905,16200:18:48,927 --> 00:18:53,600had already sown the seeds of whatwould become his doomed obsession,16300:18:54,814 --> 00:18:58,723an obsession that would last untilthe very final day of his life164and would result in both his failure and isolation. 16500:19:16,913 --> 00:19:20,467The roots of Einstein's troubles camefrom one of his other great passions.16600:19:21,484 --> 00:19:24,580He saw a connection between thefundamental physics of our universe16700:19:25,243 --> 00:19:30,024and a sense of elegance, beauty even spirituality. 16800:19:30,750 --> 00:19:35,044For him these laws of the universewere an expression of the divine.16900:19:37,649 --> 00:19:39,863It is a belief shared by many scientists,17000:19:40,449 --> 00:19:46,091including distinguished particle physicist and Anglican Priest Professor John Polkinghorne.17100:19:46,423 --> 00:19:50,154Einstein was an amateur violinist, went,once went to a concert in Berlin17200:19:50,801 --> 00:19:53,698and heard the young Yehudi Menhuin play,and he was bowled over by his performance.17300:19:54,300 --> 00:19:57,232And there's a story that he went up andbear hugged the young boy afterwards17400:19:57,800 --> 00:20:00,210and said hearing you I knowthere is a god in heaven.17500:20:05,352 --> 00:20:07,751I think that when we encounter very deep beauty176whether it's beauty in music or something like that 17700:20:10,820 --> 00:20:14,577or whether it's beauty in the scientific accountof the order and fruitfulness of the world17800:20:15,299 --> 00:20:18,929then it's difficult for us not to think thatthere is some mind and purpose behind it.17900:20:25,937 --> 00:20:30,099Einstein was very deeply impressed by thefact that as we study the physical world,18000:20:30,839 --> 00:20:34,187get beneath its surface and find outwhat it's like underneath so to speak,18100:20:34,824 --> 00:20:37,130we find a wonderful and remarkable order,18200:20:37,902 --> 00:20:42,497a beautiful pattern that is expressed actuallyalso in beautiful mathematics as it turns out,18300:20:42,819 --> 00:20:45,569that's the natural language to use.18400:20:50,838 --> 00:20:53,070Einstein believed that the rules of the universe 18500:20:53,694 --> 00:20:57,079could always be explained throughelegant mathematics.18600:21:00,389 --> 00:21:06,334In effect he thought that science could lead to an understanding of God's design for the universe.18700:21:12,905 --> 00:21:16,622You believe? In God?18800:21:17,015 --> 00:21:20,746Yes. Yes I do.18900:21:24,988 --> 00:21:28,904Do you? Believe?19000:21:29,530 --> 00:21:33,844Do I believe there is someone whoplans the daily life of Albert Einstein?19100:21:34,812 --> 00:21:40,643No. Although sometimes I think he may havebeen leading me up the garden path.19200:21:42,760 --> 00:21:44,237But didn't he make the garden?19300:21:44,897 --> 00:21:47,900I think he is the garden.19400:21:48,970 --> 00:21:50,117And isn't he the gardener too?19500:21:50,479 --> 00:21:56,274Yes, and all my life I have beentrying to catch him at his work.19600:22:10,806 --> 00:22:17,249Einstein believed that the rules used to create the universe would not only be beautiful and precise, 19700:22:17,892 --> 00:22:23,081he also thought they would always allowscientists to make exact predictions.19800:22:26,077 --> 00:22:30,859So if you knew the position and speed ofthe planets at a particular moment in time,19900:22:31,552 --> 00:22:36,636you could use the laws of physics to predicttheir exact movements for eternity.20000:22:40,344 --> 00:22:45,328And Einstein believed that what wastrue for planets was true for all objects.20100:22:45,934 --> 00:22:50,462Everything could be predicted withcertainty, no matter what it was.20200:22:52,808 --> 00:22:57,942But his vision of the universe was about to be challenged by something growing from his own work...20300:22:58,504 --> 00:23:02,190something very, very, very small.20400:23:14,379 --> 00:23:20,846In 1921, while he was based here in Berlin,Einstein was nominated for the Nobel Prize,20500:23:21,613 --> 00:23:25,438not for his theories of relativity,but for another piece of work20600:23:25,809 --> 00:23:29,433also completed in his 1905 miracle year.20700:23:38,629 --> 00:23:40,795It was about the nature of light.20800:23:45,874 --> 00:23:50,279It had been believed that light wasmade up of smooth, continuous waves.20900:23:54,478 --> 00:23:57,293But Einstein saw things very differently,21000:23:57,885 --> 00:24:01,939he said light could also be thoughtof as tiny, individual particles.21100:24:02,437 --> 00:24:07,106Einstein upset the apple cart byintroducing an entirely new radical concept21200:24:07,637 --> 00:24:09,621called a quantum particle of light.00:24:10,289 --> 00:24:12,059Light is not just smooth and continuous21400:24:12,517 --> 00:24:17,009it occurs in small little packets orbullets that today we call the photon.21500:24:26,728 --> 00:24:31,662His discovery that light was not only awave but also tiny, individual particles21600:24:32,374 --> 00:24:35,301revolutionised the whole of physics.21700:24:37,140 --> 00:24:40,307And it would give birth to Einstein's demon.21800:24:54,709 --> 00:25:01,147This breakthrough would become a cornerstone ofa new field of science known as quantum mechanics. 21900:25:05,780 --> 00:25:10,755Quantum mechanics describes the behaviourof the fundamental particles of our universe.22000:25:12,228 --> 00:25:15,340The sub-atomic particles that make up every atom. 22100:25:20,018 --> 00:25:24,408As it developed, people started noticinghow, at this fundamental scale,22200:25:25,245 --> 00:25:30,365everything behaved in a very differentway to Einstein's elegant universe.22300:25:30,667 --> 00:25:34,065People had been working for about twenty-five years trying to understand the puzzles of quantum theory, 22400:25:34,683 --> 00:25:38,397when out of the blue a young GraduateStudent from Germany, Heisenberg,00:25:39,181 --> 00:25:42,027came along and produced essentially a complete theory,22600:25:42,670 --> 00:25:46,167but based on ideas which are so radically differentfrom what people had been thinking about22700:25:46,796 --> 00:25:48,359that it was entirely shocking.22800:25:50,479 --> 00:25:53,712Werner Heisenberg proposeda whole new law of physics.22900:25:54,470 --> 00:25:58,987He said that it was impossible to measureboth the speed and the position of a particle23000:25:59,769 --> 00:26:05,990because strangely, the mere act of observingthese tiny objects radically affected their behaviour.23100:26:08,381 --> 00:26:11,369But if that was true, it had profound implications.23200:26:13,089 --> 00:26:16,060If you couldn't be precise about a particle's speed and position, 23300:26:16,681 --> 00:26:20,381then it would be impossible to makeaccurate predictions about its movements.23400:26:21,242 --> 00:26:24,026And Einstein believed that everything should be predictable.23500:26:25,320 --> 00:26:28,456The forecast said it would be cool. So much for prediction.23600:26:29,094 --> 00:26:31,105Maybe God changed his mind.23700:26:33,612 --> 00:26:36,871Maybe you're right, maybe hehates to be second-guessed.23800:26:37,746 --> 00:26:41,343I sometimes feel he dislikes being observed.23900:26:42,370 --> 00:26:47,463Colleagues of mine would have it that weinfluence God's world merely by observing it.24000:26:48,044 --> 00:26:48,948How can that be?24100:26:49,385 --> 00:26:55,603How can it be? How can you observe something andat the same time change its nature just by observing it? 24200:26:57,019 --> 00:27:01,452Sometimes I don't think we needGod to make us look foolish,24300:27:02,145 --> 00:27:05,359we do that very well for ourselves.24400:27:05,689 --> 00:27:07,834Maybe just God doesn'twant us to know everything.24500:27:08,395 --> 00:27:14,675Raffiniert ist der Herrgott, aber boshaft ist er nicht. 24600:27:14,957 --> 00:27:16,125I'm sorry?24700:27:16,365 --> 00:27:19,319God is subtle, but he is not malicious.24800:27:20,526 --> 00:27:24,088I don't believe he would putanything beyond our reach.24900:27:25,336 --> 00:27:28,930I do not think God is hiding anything from us.25000:27:30,644 --> 00:27:36,435He is just asking us to search a little harder.25100:27:42,858 --> 00:27:44,247If Heisenberg was right25200:27:44,885 --> 00:27:50,090and it was impossible to measure precisely thespeed and position of a particle at the same time,25300:27:50,999 --> 00:27:54,173it meant that some things would always be uncertain. 25400:27:57,349 --> 00:28:03,084For the quantum theorists the best you couldhope for was a science based on probabilities.25500:28:05,626 --> 00:28:10,172For Einstein, though he could see greatvalue in some aspects of quantum theory,25600:28:11,205 --> 00:28:14,501this just wasn't how God would have built his universe. 25700:28:15,258 --> 00:28:18,160I think Einstein's major objection to quantum mechanics 25800:28:19,230 --> 00:28:21,795is something that didn't fit into his world.25900:28:22,999 --> 00:28:29,641He could not accept the fact that if you do an experiment twice in exactly the same way,26000:28:30,041 --> 00:28:34,036that in one, one time you may get result 'A'26100:28:34,964 --> 00:28:36,399and the other time you may get result 'B'.26200:28:37,447 --> 00:28:42,491He really hated the idea that you weresurrendering to the world of probabilities.26300:28:51,257 --> 00:28:52,827。