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From Science to Consciousness
People travel to wonder at the height of
mountains, at the huge waves of the sea,
at the long courses of rivers, at the vast
compass of the ocean, at the circular
motion of the stars; and they pass by
themselves without wondering.
St. Augustine
I have always been a scientist at heart. As a teenager, I delighted in learning how the world worksâhow sound travels through the air, why metals expand when heated, why bleaches bleach, why acids burn, how plants know when to bloom, how we see color, why a lens bends light, how spinning tops keep their balance, why snowflakes are six-pointed stars, and why the sky is blue.
The more I discovered, the more fascinated I became. At sixteen I was devouring Einstein and marveling at the paradoxical world of quantum physics. I delved into different theories of how the universe began, and pondered the mysteries of space and time. I had a passion for knowing, an insatiable curiosity about the laws and principles that governed the world.
I was equally intrigued by mathematics, sometimes called âthe queen and servantâ of science. Whether it was the swing of a pendulum, the vibrations of an atom, or the path of an arrow shot into the wind, every physical process had an underlying mathematical expression. The premises of mathematics were so basic, so obvious, so simple, yet from them unfolded rules governing the most complex of phenomena. I remember the exhilaration I felt upon discovering how the same basic equationâone of the simplest and most elegant of all mathematical equationsâgoverns the propagation of light, the vibrations of a violin string, the coiling of a spiral, and the orbits of the planets.
Matter has reached the point of beginning to know itself. . . . [Man is] a starâs way of knowing about stars.
George Wald
Numbers, so boring to many, were to me magical. Irrational and imaginary numbers, infinite series, indefinite integralsâI could not get enough of them. I loved the way they all fitted together, like pieces of a cosmic jigsaw puzzle.
Most intriguing of all was how the whole world of mathematics unfolded by the simple application of reason. It seemed to describe a preordained universal truth that transcended matter, time, and space. Mathematics depended on nothing, and yet everything depended on it. If you had asked me then whether there was a God, I would have pointed to mathematics.
The Young Atheist
Conventional religion I had rejected at an early age. I was brought up as a member of the Church of England, but in a somewhat lax fashion. Like many families in our village, we attended Sunday service every few weeksâenough to keep our sins in check and our guilt at bay. That was as far as religion affected me. It was an accepted part of life, but not an important part.
So it was until I entered my teens, when I went through the customary ceremony of confirmation. If the process had lived up to its name, I should then have been confirmed as a member of the church. Nothing could have been further from the truth. If anything was confirmed, it was my skepticism toward religion.
I could accept ideas of not sinning, loving thy neighbor, caring for the sick, and other models of Christian behavior, but my mind balked at some of the articles of faith I was expected to accept. On Sundays, the congregation dutifully recited the Nicene Creed, professing their belief in âGod, the Father, creator of Heaven and Earth . . . [whose] only begotten son . . . born of the virgin Mary . . . arose from the dead . . . and ascended into Heaven to sit at the right hand of the Father.â Such a creed might have been credible at its inception seventeen hundred years ago, but to a budding scientist growing up in the second half of the twentieth century, it was far from believable.
Copernicus had shown that we were not the center of the universe. Astronomers had found no evidence of a heaven up in the sky. Darwin had dispelled the idea that God created the earth and all its living creatures in six days. And biologists had proven virgin birth impossible. Which story should I believe? A text whose only authority was itself, and whose proclamations had little bearing on my everyday reality? Or contemporary science with its empirical approach to truth? At age thirteen, the choice was obvious. I dropped out of conventional religion, and for the rest of my teens my spiritual concerns were reduced to an ongoing debate as to whether I was an atheist or an agnostic.
Psychological Inclinations
I was not, however, a diehard materialist; I did not believe everything could be explained by the physical sciences. By my mid-teens I had developed an interest in the untapped powers of the human mind. Stories of yogis buried alive for days, or lying on beds of nails, intrigued me. I dabbled in so-called out-of-body experiences and experimented with the altered states of consciousness produced by hyperventilating or staring at pulsating lights. I developed my own techniques of meditation, though I did not recognize them as such at the time. I was fascinated by the possible existence of extraterrestrial intelligence; given the trillions of stars in the cosmos, I thought it extremely unlikely that ours was the only planet in the entire universe that had developed conscious life.
I was also making my first ventures into philosophy. My friends and I spent countless hours debating whether or not the mind had an independent existence from the brain. If so, how did mind and brain interact? Or was the mind somehow generated by the brain? When we tired of that, there was always the related question of free will versus determinism. If everything, including the state of our own brains, was predetermined by the laws of physics, was our experience of free will genuine, or just an illusion?
Nevertheless, drawn as I was to questions about the human mind, my overriding interest was still in the physical sciences, and above all, mathematics. Thus, when the time came to pick which subject I was to study at university, the choice was obvious. And when I had to decide which university I should apply to, the choice was again clear. Cambridge was, and probably remains, the best British university at which to study mathematics.
Premonitions of Paradise
My first visit to Cambridge was on the day of my inter-viewâthe first part of the admissions procedure.
From afar, the city emerged from flat, wet, green fields like a cultural oasis. As I approached the city center, streets of neatly terraced houses and Edwardian homes gave way to grander university buildings. Architecture from across the centuriesâold Norman churches, towering Gothic chapels, ornate Elizabethan halls, Victorian science laboratories, and contemporary edifices of glass and steelâmingled in the sunshine. Within the college walls, carefully manicured lawns covered the courtyards and quadrangles. Heavy oak doors concealed worn stone staircases, leading to the rooms of who-knew-what world-famous professor.
At the heart of the university lay the market square. Unlike many English towns, whose traditional markets have disappeared to be replaced by tastefully cobblestoned reminders of the townâs heritage, the Cambridge market square was crowded with stalls full of fruit, vegetables, flowers, clothes, books, records, hardware, toys, furniture, and bric-a-brac. Here was a city whose heart remained alive, whose soul had not been trampled by the twentieth centuryâs rush to efficiency and functionality.
As I made my way through the gently winding streets to the college where I was to have my interview, I had that feeling you sometimes get when you meet someone and just know that you are going to be seeing a lot more of each other. I felt sure that I would be coming to live in this exotic seat of learning.
About six weeks later, as I left my house one morning on my way to school, I passed the postman on his rounds. Out of the blue, the thought came that he had a letter for me, and not just any letter; he had a letter offering me a place at Cambridge. There was no reason to expect such a letter. Although my interview had gone reasonably well, I had not yet taken the entrance exam. So I dismissed the thought and continued on my way.
Arriving at school a half hour later, I was told my mother had just phoned with the news that the postman did have a letter from Cambridge, and that I had indeed been offered a place.
Going Up
Nine months later, I was âgoing up,â as they say at Cambridge, to begin my studies. The day after my arrival I had my first meeting with my tutor, a renowned professor of English literature. At Cambridge a tutor has very little to do with a studentâs academic instruction; that is the concern of oneâs supervisor. Tutors are in locus parentis, a Latin term meaning âin place of parents.â Their role is to take care of a studentâs personal well-being.
âDonât be too serious a student,â my tutor advised. âGo to the lectures, yes; do your assignments. But most of all value the people who are here. Your fellow students are the cream of the cream, and the graduates and dons you will be living with are some of the best minds in the country.
âThe conversations you have over dinner, or walking by the river in the afternoon, are as important as the lectures you go to in the morning. You are here not just to get a degree; you are also here to mature as a person, to find yourself.â
Never could there have been a more favorable time to find oneself. This was Cambridge in the sixties. Centuries old traditions were crumbling fast. The university had just abolished the rule that undergraduates should wear their academic gowns when about the town at night. No longer was a male student likely to be expelled for being caught with a woman in his room. Students staged the first sit-ins, challenging the establishment to give them a democratic voice in their own education. A banner demanding âPeace in Vietnamâ was strung between the spires of Kingâs College chapelâan audacious, if sacrilegious, feat of climbing. There was a sense of hope, the potential for change, for something new.
Peace was in the air, and so was love. Hippies in Afghan coats happily rubbed shoulders with students in tuxedos. White bicycles appeared, belonging to no one but available for anyone to use. Karl Marx, Alan Watts, and Marshall McLuhan were prescribed extracurricular reading. Sergeant Pepper called out across the courtyards, inviting anyone and everyone to sit back and enjoy the show.
The Turning Point
I was exactly where I thought I wanted to be, studying with the best of minds in the best of places. By my third year, Stephen Hawking was my supervisor. Although he had already fallen prey to the motor-neuron disorder known as Lou Gehrigâs disease, the illness had not yet taken its full toll. He could still walk with the aid of a cane and speak well enough to be understood.
Sitting with him in his study, half my attention would be on whatever he was explainingâthe solution of a particularly difficult set of differential equations, perhapsâbut my eye would be caught by hundreds of sheets of paper strewn across his desk. Scrawled on them, in very large handwriting, were equations that I could hardly begin to fathom. Only later did I realize they were probably part of his seminal work on black holes.
On more than one occasion, a spasmodic movement of his arm would send a pile of papers sliding to the floor. I wanted to get down and scoop them up for him, but he always insisted I leave them there. To be doing such groundbreaking work in cosmology was achievement enough. To be doing it with such handicaps was astounding. I felt extremely privileged and very daunted.
Yet, deep inside, something else was stirring.
In mathematics I had reached the point where I could solve Schrödingerâs equation for the hydrogen atom. Schrödingerâs equation is one of the fundamental equations of quantum physics. Solving it for a single particle such as...