Princeton University Alumni

"FACULTY PSYCHOLOGY is getting to be respectable again after centuries of hanging around with phrenologists and other dubious types. By I mean, roughly , the view that many fundamentally different kinds of psychological mechanisms must be postulated in order to explain the facts of mental life . Faculty psychology takes seriously the apparent heterogeneity of the mental and is impressed by such prima facie differences as between, say, sensation and perception, volition and cognition, learning and remembering, or language and thought."

"If there is a community of computers living in my head, there had also better be somebody who is in charge; and, by God, it had better be me."

"If people differ in an absolutely general way in their estimations of epistemic relevance, and if we follow the holism of meaning and individuate intentional states by way of the totality of their epistemic bonds, the consequence will be that two people (or, for that matter, two temporal sections of the same person) will never be in the same intentional state. Therefore, two people can never be subsumed under the same intentional generalizations. And, therefore, intentional generalization can never be successful. And, therefore again, there is no hope for an intentional psychology."

"From the point of view of semantics, errors must be accidents: if in the extension of "horse" there are no cows, then it cannot be required for the meaning of "horse" that cows be called horses. On the other hand, if "horse" did not mean that which it means, and if it were an error for horses, it would never be possible for a cow to be called "horse." Putting the two things together, it can be seen that the possibility of falsely saying "this is a horse" presupposes the existence of a semantic basis for saying it truly, but not vice versa. If we put this in terms of the crude causal theory, the fact that cows cause one to say "horse" depends on the fact that horses cause one to say "horse"; but the fact that horses cause one to say "horse" does not depend on the fact that cows cause one to say "horse"..."

"When taken as a way of modeling cognitive architecture, really does represent an approach that is quite different from that of the classical cognitive science that it seeks to replace. Classical models of the mind were derived from the structure of Turing and Von Neumann machines. They are not, of course, committed to the details of these machines as exemplified in Turing's original formulation or in typical commercial computers—only to the basic idea that the kind of computing that is relevant to understanding cognition involves operations on symbols.. In contrast, connectionists propose to design systems that can exhibit intelligent behavior without storing, retrieving, or otherwise operating on structured symbolic expressions. The style of processing carried out in such models is thus strikingly unlike what goes on when conventional machines are computing some function."

"Philosophers who have wanted to banish the ghost from the machine have usually sought to do so by showing that truths about behavior can sometimes, and in some sense, logically implicate truths about mental states. In so doing, they have rather strongly suggested that the exorcism can be carried through only if such a logical connection can be made out. … [O]nce it has been made clear that the choice between dualism and behaviorism is not exhaustive, a major motivation for the defense of behaviorism is removed: we are not required to be behaviorists simply in order to avoid being dualists."

"From the empty grave of Jesus the enemies of the cross turn away in unconcealable dismay. Christ has risen from the dead! After two thousand years of the most determined assault upon the evidence which establishes it, that fact stands. And so long as it stands, Christianity too must stand as the one supernatural religion. The resurrection of Christ is the fundamental apologetical fact of Christianity."

"We must not, then, as Christians, assume an attitude of antagonism toward the truths of reason, or the truths of philosophy, or the truths of science, or the truths of history, or the truths of criticism. As children of the light, we must be careful to keep ourselves open to every ray of light. Let us, then, cultivate an attitude of courage as over against the investigations of the day. None should be more zealous in them than we. None should be more quick to discern truth in every field, more hospitable to receive it, more loyal to follow it, whither soever it leads."

"Simplicity is the touchstone in finding new physical laws. … If it's elegant, then it's a rough rule of thumb: you're on the right track."

"I may go down in history as the guy who killed Pluto."

"Mr. Hussein's dogged insistence on pursuing his nuclear ambitions, along with what defectors described in interviews as Iraq's push to improve and expand Baghdad's chemical and biological arsenals, have brought Iraq and the United States to the brink of war."

"Almost all Americans would recognize Anchorage, because Anchorage is that part of any city where the city has burst its seams and extruded Colonel Sanders."

"In making war with nature, there was risk of loss in winning."

"You see the rivers running east. Then you see mountains rise. Rivers run off them to the west. Mountains come up like waves. They crest, break, and spread themselves westward. When they are spent, there is an interval of time, and then again you see the rivers running eastward. You look over the shoulder of the painter and you see all that in the landscape. You see it if first you have seen it in the rock. The composition is almost infinitely less than the sum of its parts, the flickers and glimpses of a thousand million years."

"When the climbers in 1953 planted their flags on the highest mountain, they set them in snow over the skeletons of creatures that had lived in the warm clear ocean that India, moving north, blanked out. Possibly as much as twenty thousand feet below the seafloor, the skeletal remains had formed into rock. This one fact is a treatise in itself on the movements of the surface of the earth. If by some fiat I had to restrict all this writing to one sentence, this is the one I would choose: The summit of Mt. Everest is marine limestone."

"Some years later I spoke to a mentally disturbed young man. Very agitatedly, he described to me how alien beings from outer space had invaded the earth. They were formed of mental substance, lived in human minds, and controlled human beings through the creations of science and technology. Eventually this alien being would have an autonomous existence in the form of giant computers and would no longer require humans–and that would mark its triumph and the end of humanity. Soon he was hospitalized because he was unable to shake off this terrible vision."

"Most physicists enjoy the outdoors. They are mushroom gatherers, bird watchers, hikers, amateur mountaineers whose idea of weekend relaxation is to climb a mountain. Several physics summer schools and research centers are located in or near mountainous areas. I have not seen such uniform recreational impulses in other professions, an observation which prompts speculation on the connection between the nature of inquiry in physics and mountain climbing."

"I often dream about falling. Such dreams are commonplace to the ambitious or those who climb mountains. Lately I dreamed I was clutching at the face of a rock but it would not hold. Gravel gave way. I grasped for a shrub, but it pulled loose, and in cold terror I fell into the abyss. Suddenly I realized that my fall was relative; there was no bottom and no end. A feeling of pleasure overcame me. I realized that what I embody, the principle of life, cannot be destroyed. It is written into the cosmic code, the order of the universe. As I continued to fall in the dark void, embraced by the vault of the heavens, I sang to the beauty of the stars and made my peace with the darkness."

"I used to climb mountains in snow and ice, hanging onto the sides of great rocks. I was describing one of my adventures to an older friend once, and when I had finished he asked me, "Why do you want to kill yourself?" I protested. I told him that the rewards I wanted were of sight, of pleasure, of the thrill of pitting my body and my skills against nature. My friend replied, "When you are as old as I am you will see that you are trying to kill yourself.""

"We surely stand at the threshold of a great adventure of the human spirit — a new synthesis of knowledge, a potential integration of art and science, a deeper grasp of human psychology, a deepening of the symbolic representations of our existence and feelings as given in religion and culture, the formation of an international order based on cooperation and nonviolent competition. It seems not too much to hope for these things. The future, as always, belongs to the dreamers."

"Although the idea that the universe has an order that is governed by natural laws that are not immediately apparent to the senses is very ancient, it is only in the last three hundred years that we have discovered a method for uncovering that hidden order — the scientific-experimental method. So powerful is this method that virtually everything scientists know about the natural world comes from it. What they find is that the architecture of the universe is indeed built according to invisible universal rules, what I call the cosmic code — the building code of the Demiurge. Examples of this universal building code are the quantum and relativity theory, the laws of chemical combination and molecular structure, the rules that govern protein synthesis and how organisms are made, to name but a few. Scientists in discovering this code are deciphering the Demiurge's hidden message, the tricks he used in creating the universe. No human mind could have arranged for any message so flawlessly coherent, so strangely imaginative, and sometimes downright bizarre. It must be the work of an Alien Intelligence!"

"Perhaps our thinking exemplifies a selective system. First lots of random scattered ideas compete for survival. Then comes the selection for what works best — one idea dominates, and this is followed by its amplification. Perhaps the moral [...] is that you never learn anything unless you are willing to take a risk and tolerate a little randomness in your life."

"Mountain climbing is an analogue of the research process in theoretical physics. In working on a problem in physics one is never assured of a solution, because there are many false leads and pitfalls. Likewise in climbing there is no certainty of attaining the summit; the route is often unknown, or sometimes one attains a false summit. But the important point is that if you reach the top, the view is enormous. There is no comparison between what you see from just below the summit and what you can see from the top. Similarly with finally solving an important problem in physics the view you get is enormous."

"People did not always love the mountains. Just a few hundred years ago the high mountains were regarded as horrible, monstrous places filling people with terror and fear. The inhabitants near them were seen as awful demons, subhumans. But this attitude got transformed into just the opposite, especially by Romantic writers and painters in the nineteenth century. Seen by the Romantics, high mountains became places of impossible beauty, where the quality of light and the expansive solitary grandeur of the high peaks opened the heart of the individual. A man climbing a mountain became the image of self-conscious intelligence pitted against the eternal indifference of the forces of nature. Compared to these forces of nature, we are nothing save for the will that moves our limbs. Only that will is truly our own."

"The theory community, myself included - became rather troubled about the particle."

"I feel I may be controversial in this, but I think that wisdom doesn't count for a lot in theoretical physics. It’s not like history and literature, where you accumulate a broader and broader world view. It’s not a question of energy; I have plenty of energy. I just wrote—just finished writing this massive book...I think most theoretical physicists do their best work when they're young, because they see problems fresh for the first time."

"You can’t imagine how wonderful it is to teach physics at MIT. The physics majors at MIT are there because they want to be there. Their love of physics is infectious...I've likened it to teaching art history in Rome."