Harvard University Alumni

"An evolutionary approach provides powerful lenses that correct for instinct blindness. It allows one to recognize what natural competences exist, it indicates that the mind is a heterogeneous collection of these competences and, most importantly, it provides positive theories of their designs. Einstein once commented that "It is the theory which decides what we can observe". An evolutionary focus is valuable for psychologists, who are studying a biological system of fantastic complexity, because it can make the intricate outlines of the mind's design stand out in sharp relief. Theories of adaptive problems can guide the search for the cognitive programs that solve them; knowing what cognitive programs exist can, in turn, guide the search for their neural basis."

"It is hardly correct to speak of these meetings as ‘lectures’, although this is what Wittgenstein called them. For one thing, he was carrying on original research in these meetings. He was thinking about certain problems in a way that he could have done had he been alone. For another thing, the meetings were largely conversation."

"Wittgenstein's personality dominated these meetings. I doubt that anyone in the class failed to be influenced by him in some way. Few of us could keep from acquiring imitations of his mannerisms, gestures, intonations, exclamations. These imitations could easily appear ridiculous when compared with their original."

"Some have thought that Wittgenstein's lectures were only for his friends and favourites. In fact he would admit anyone to his lectures. He required, however, that they should attend continuously and for a considerable period of time. He would not allow anyone to come for only one or two meetings. To one such request he replied, 'My lectures are not for tourists.'"

"One recent history of economic thought (Jürg Niehans’s A History of Economic Theory) devotes twenty-four pages to Samuelson’s ideas. Adam Smith only gets thirteen. Samuelson’s work on stock markets and the random walk takes up less than two of those twenty-four pages. He was “the last generalist in economics,” as he liked to say, and for him financial market studies were just a side project that he at times seemed deeply ambivalent about. His intervention was, however, crucial to the triumph of the random walk. Here was one of the most important economists of all time, and he didn’t think the relationship between coin flips and the stock market was a dinner-speech triviality."

"Psychologist Philip Tetlock (following the lead of Isaiah Berlin), divided the world of political forecasters into hedgehogs and foxes."

"I first saw Wittgenstein in the Michaelmas term of 1938, my first term at Cambridge. At a meeting of the Moral Science Club, after the paper for the evening was read and the discussion started, someone began to stammer a remark. He had extreme difficulty in expressing himself and his words were unintelligible to me. I whispered to my neighbour, ‘Who is that?’: he replied, ‘Wittgenstein.’ I was astonished, because, for one reason I had expected the famous author of the Tractatus Logico-Philosophicus to be an elderly man, whereas this man looked young—perhaps about 35. (His actual age was 49.) His face was lean and brown, his profile was aquiline and strikingly beautiful, his head was covered with a curly mass of brown hair. I observed the respectful attention that everyone in the room paid to him. After his unsuccessful beginning he did not speak for a time but was obviously struggling with his thoughts. His look was concentrated, he made striking gestures with his hands as if he were discoursing. All the others maintained an intent and expectant silence. I witnessed this phenomenon count less times thereafter and came to regard it as entirely natural."

"Foster gained widespread attention when he announced that Reed, from the start, would reject competitive intercollegiate sports and fraternal organizations in favor of a democratic and intellectual environment, with emphasis on a quality of teaching compatible with his idea of a “Johns Hopkins for undergraduates.” He also eschewed grading in an effort to underscore Reed’s commitment to knowledge for knowledge’s sake, and set the senior thesis and oral exam as mandatory goalposts for graduation."

"Foster's great success as a teacher, reflected in his textbooks Argumentation and Debating (1908) and Essentials of Exposition and Argument (1911), led to his remarkably early promotion to full professor at Bowdoin in 1905. The vision of an "ideal college" discussed in Administration of the College Curriculum (1911), based on his Ph.D. dissertation at Teachers College of Columbia University, led to his selection in 1910 as first president of Reed College in Portland, Oregon. At Reed, Foster promoted a democratic spirit and serious intellectual pursuits, instituting seminars, theses, and comprehensive examinations, while excluding fraternities, sororities, and competitive intercollegiate sports. His educational experiment at Reed attracted national attention. He later returned to his early interest in rhetoric, publishing books on Basic Principles of Speech (with Lew Sarett, 1936) and Speech (1942)."

"The diagram on the opposite page, similar in plan and purpose to one devised by Mr. M. C. Rorty, represents, in a general way, the circuit flow of money. To find fault with this diagram from an engineering standpoint would not be difficult; neither would it be sensible. All we should ask of these reservoirs and pipes is that they serve the purpose at hand. In the main, subject to certain qualifica qualifications to be made presently, this diagram does serve our purpose. It pictures the flow of money when business is relatively stable."

"The double reservoir at the top shows the amount of money in the hands of individuals and available for expenditure in consumption. This is what we have previously called the consumers' fund. The reservoir is divided into two parts in order graphically to represent the fact that a large part of the money received by individuals is income, most of which is spent in consumption; while a smaller part is money received from the sale of real estate, bonds and stocks, most of which is reinvested. The two parts of the reservoir, however, are connected with pipes, in order to take account of the fact that some income is invested and some money received from the sale of securities is spent in consumption. These connecting pipes are important. We must bear in mind that they are always partly, and never wholly, clogged. By their aid, we may visualize the fact that we have no means of knowing how much of the consumers' fund actually will be spent in consumption in any given period of time."

"The " general" definition may give you no hint as to the way in which a particular assertion is meant to be interpreted. When, therefore, as in formal debate, a proposition is advanced by persons other than those who discuss it, clearness in defining is not sufficient. In such cases a definition must have two qualities: it must be clear, and it must be satisfactory to the persons addressed. They must know what the speaker means, and they must be convinced that his meaning is the correct one, — correct for that particular proposition at the time and place and under the conditions of that particular debate. Otherwise, they may object in the end that he has proved, not the given proposition, but another which he has substituted for it by means of arbitrary definitions."

"Most grown-up people get rid of the childish notion that whatever appears in print is true, but many cling to the equally absurd notion that the printing of a statement does give it some claim to dignity and credence. For the purposes of argumentation, let us here make this point emphatic: The mere fact that a statement appears in print lends not one atom to its value. Every assertion that is brought forward — though it may have been printed a thousand times and repeated a million times — must be challenged and tested before it can be regarded as trustworthy testimony of authority, — before it can be of any value as evidence."

"Unless disputants understand the meaning attached by each other to the terms of a controversy, they may worry along indefinitely without making an inch of progress. The contending parties may think they agree on the proposition, when, as a matter of fact, their apparent agreement is due to ambiguity in the use of the terms. On the other hand, the contending parties may work themselves into a quarrel over imaginary disagreements concerning ideas, when in fact they are merely confused as to the meaning of words. Disputes which seem interminable are sometimes ended abruptly and happily upon the accidental discovery that the parties in dispute agreed all the time as to the real questions at issue, while neither side understood what the other side meant."

"The reference to the source of authority should be definite. Such vague phrases as the following, common though they are, are worthless as proof : —"

"The great superiority of debating, as the schools should look upon it, lies in the fact that it adds to many of the elements of the present absorbing interest in athletics those educational values which contribute directly to the highest type of citizenship."

"It is not easy to phrase the proposition so that it shall mean precisely what we wish to argue; so that it shall include the whole matter at issue, nothing more and nothing less ; so that there shall be no possible ambiguity. Yet, unless the proposition is so phrased, a debate may degenerate into a lifeless quibble concerning the meaning of the terms, under which the living heart of the question is buried."

"Formal debate is a kind of game. In the time limit, the order of speakers, the alternation of sides, the give and take of rebuttal, the fixed rules of conduct, the ethics of the contest, the qualifications for success, and the final awarding of victory, debate has much in common with tennis."

"One of the early presidents of Harvard College wrote a dissertation on the question, "Whether angels speak any language; if so, whether it is Hebrew." Much futile discussion on such questions has at various times brought debating into ill repute. A question should offer something more than an ingenious exercise; it should offer the chance of arriving at some conclusion regarded by the particular audience or disputants as of some practical importance. It should be discarded if, like the proposition, "The pen is mightier than the sword/' it offers no possibility of arriving at reasonably sound conclusions through the process of argument."

"What counts is what you do with your money, not where it came from."

"Most people might just as well buy a share of the whole market, which pools all the information, than delude themselves into thinking they know something the market doesn't."

"When I started worrying about stocks, it was the late 1930s and early 1940s and it didn't seem like a good way to make money then, either."

"At home, as well as abroad, there is paralyzing uncertainty among business men as to whether the Reserve Board will allow that expansion of bank credit without which such prosperity as we have had in recent years simply cannot last. In short, the Board has created a state of mind which breeds business depression."

"Let us not be surprised, however, if the study of the principles of argumentation — or even Burke's much mis-taught Speech — seems dry without the prospect of actual debate. We should hardly expect a half-back to feel much enthusiasm over reading the rules of the game and tackling a dummy if he could not look forward to tackling a man. When elocution and argumentative writing have failed to stimulate interest, formal debate may succeed, for it is a kind of game. In the time limit, the order of speakers, the alternation of rides, the actual struggle of opposing forces, the give and take of rebuttal, the fixed rules and the ethics of conduct, the qualifications for success, and the final awarding of victory, debate has much in common with tennis and football."

"The daily expenditures by consumers for new consumers' goods, upon which business stability largely depends, are determined in part by the total volume of money in circulation, in part by other factors including the frequency with which that money is returned to consumers. The flow of money, therefore, from use in consumption to another use in consumption should not be overlooked in studies of the causes and conditions of business fluctuations. It is the purpose of this paper to describe certain aspects of this circuit flow of money, to raise the question whether it does not deserve more attention that it has yet received in our analyses of business cycles, and to suggest pertinent lines of investigation. Unfortunately, the statistics upon which the most important conclusions concerning this subject must be based are not at hand and are not likely to be for a long time to come. The following discussion will have served its purpose if it stimulates further inquiry in profitable directions and helps to hasten the day when the necessary statistics are available."

"Think of the firm as a gigantic tub of whole milk. The farmer can sell the whole milk as it is. Or he can separate out the cream, and sell it at a considerably higher price than the whole milk would bring. (Selling cream is the analog of a firm selling debt securities, which pay a contractual return.) But, of course, what the farmer would have left would be skim milk, with low butter-fat content, and that would sell for much less than whole milk. (Skim milk corresponds to the levered equity.) The Modigliani-Miller proposition says that if there were no cost of separation (and, of course, no government dairy support program), the cream plus the skim milk would bring the same price as the whole milk."

"What is the "cost of capital" to a firm in a world in which funds are used to acquire assets whose yields are uncertain; and in which capital can be obtained by many different media, ranging from pure debt instruments, representing money-fixed claims, to pure equity issues, giving holders only the right to a pro-rata share in the uncertain venture? This question has vexed at least three classes of economists: (1) the corporation finance specialist concerned with the techniques of financing firms so as to ensure their survival and growth; (2) the managerial economist concerned with capital budgeting; and (3) the economic theorist concerned with explaining investment behavior at both the micro and macro levels."

"Just as vision is inseparable from our spiritual intelligence, our capacity to handle ambiguity, uncertainty, and complexity is bound up with our emotional intelligence."

"Organizational theory is based on a culture's answers to questions about the self."

"Zohar and Marshall (2001) describe three aspects of intelligence. The first intelligence is the intellectual or rational intelligence (IQ), which would be the intelligence used "to solve logical or strategic problems". The second intelligence is emotional intelligence (EQ), a "basic requirement for the effective use of IQ". The third intelligence is spiritual intelligence (SQ), which is the "necessary foundation for the effective functioning of both IQ and EQ". Spiritual intelligence can be described as conscience."

"Our choices from diet to outlook to emotional state directly alter our neural and gene activity at every moment."

"Without doubt the most dangerous devices for active defense among the Dinosauria emerged in Triceratops. The scene has been portrayed in paintings, drawings, and illustrations hundreds of times, but it remains thrilling. Tyrannosaurus, the greatest dinosaur toreador, confronts Triceratops, the greatest set of dinosaur horns. No matchup between predator and prey has ever been more dramatic. It's somehow fitting that those two massive antagonists lived out their co-evolutionary belligerence through the very last days of the very last epoch in the Age of Dinosaurs. Tyrannosaurus stood over twenty feet tall when fully erect, and a large adult was as heavy as a small elephant - five tons. No predatory dinosaur, no predatory land animal of any sort, had more powerful jaws. Withstanding a Tyrannosauruss attack required either tanklike armor – the approach taken by Ankylosaurus – or most powerful defensive weapons - the approach taken by Triceratops."

"Plants and plant-eaters co-evolved. And plants aren't the passive partners in the chain of terrestrial life. Hence today's Pop Ecology movement is quite wrong in believing that plants are happy to fill their role as fodder for herbivores in a harmonious and perfectly balanced ecosystem. A birch tree doesn't feel cosmic fulfillment when a moose munches its leaves; the tree species, in fact, evolves to fight the moose, to keep the animal's munching lips away from vulnerable young leaves and twigs. In the final analysis, the merciless hand of natural selection will favor the birch genes that make the tree less and less palatable to the moose in generation after generation. No plant species could survive for long by offering itself as unprotected fodder."

"The sum of evolutionary evidence is thoroughly damning. In nearly every modification of the evolutionary process made in the duckbills as they developed from their dryosaur ancestors, the duckbills suffered a diminution of their swimming potential. Their fore- and hind paws became shorter and more compact, not longer and more widely spread. Their tails got weaker and stiffer. Far from being the best, the duckbills must have been the clumsiest and slowest swimmers in all the Dinosauria. If pressed, they probably could paddle slowly from one riverbanck to another. The central theme of their bodily evolution was indeed specialized - orthodox theory was right on that point - but the direction of specialization was landward. These dinosaurs were specialized for a totally terrestrial existence."

"There may be some ground for believing that brontosaurs ate... soft foods. If the possibility of gizzard stones is ignored, the brontosaurs' dentition does seem little equipped to deal with meals of tougher plants. But there are no ground whatsoever for believing it of duckbills. The mouth of a duckbill dinosaur contained one of the efficient cranial Cusinarts in land-vertebrate history. Duckbill teeth and jaws were incomparable grinders, designed to cope with foods right inside the duckbill's oral compartment."

"No living reptile has cheeks. But no living reptile has grinding teeth anything remotely resembling those of a duckbill. If the duckbills could have evolved such unreptilian teeth, why couldn't they have evolved unreptilian teeth?"

"Zoos mislead their visitors by the way the species are housed. Birds are in the Bird House, of course, and crocodiles are always segregated to the Reptile House with the other naked-skinned, scale-covered brutes. So the average visitor leaves the zoo firmly persuaded that crocodilians are reptiles while birds are an entirely different group defined by "unreptilian" characteristics - feathers and flight. But a turkey's body and a croc's body laid out on a lab bench would present startling evidence of how wrong the zoos are once the two stomachs were cut into. The anatomy of their gizzards is strong evidence that crocodilians and birds are closely related and should be housed together in zoological classification, if not in zoo buildings."

"Both birds and crocs have the identical plan to their specialized gizzard apparatus, and this type of internal food processor is absent in the other "reptiles" - lizards, snakes, and turtles."

"The message from the tropics is unambiguous: To be a successful big land animal, you must cope with mammals, and to cope with mammals you must be a mammal yourself, or at least have metabolism as high as a mammal's. And big mammals have suppressed big reptiles in our tropics for the last sixty-five million years. So how can the dinosaurs' success over mammals' be explained? By assuming that dinosaurs had low-energy metabolic styles? Not very likely."

"By themselves, brontosaur gizzards don't indicate how much or what these dinosaurs ate each day; other lines of evidence must be employed to explore these questions. But brontosaur gizzards and teeth together indicate what brontosaurs did not eat. They didn't eat soft, mushy vegetation. Birds that subsist entirely on soft fruits don't possess muscular gizzards and don't use hard pebbles for their gizzard linings. Soft, watery food requires only a short, simply constructed gut - with just enough contractile force to squeeze out all the juices. Brontosaur teeth, moreover, confirm the heretical idea that they ate a tough vegetable diet. If the brontosaurs dined only on soft water plants, then very little wear would be found on their teeth. But in fact the teeth of Camarasaurus, Brachiosaurus, and their kin manifest very severe wear, which could only have been produced by tough or gritty food."

"Our own mammalian order, the primates, prides itself on hand-eye coordination, monkeys, apes, and man are all good manipulators. But no mammal can rival the chameleon for eye-tongue coordination."

"Duckbills were supposedly croc-style swimmers, moving by strong, easy, side-to-side flexures of their tail. Therefore, the optimal design would feature vertical tail spines. But duckbill spines all slanted strongly backward, exactly as in land-living lizards, not in swimmers. Another problem in the duckbill's swimming equipment lies in the profile of the tail. The deepest part of the croc's tail is close to the end, because the end swings through a wider arc than does the base in moving side to side. Thus the tail is deepest where it can do the most good in pushing against the water. All powerful tail-scullers have such deep tail ends. But duckbill tails were deepest at the hips and become progressively narrower from top-to-bottom toward the tip - another caudal feature nearly totally maladapted for its primary function."

"Giant predator lizards can't evolve in the presence of big mammal predators. So the lesson is that mammals suppress much of the evolutionary potential of modern lizards. Is the Komodo dragon a good working model of how dinosaurs succeeded? Absolutely not. Dinosaurs suppressed the evolutionary potential of mammals, not the other way around. And dinosaurs carried out this supression everywhere, on all the continents, not merely on a few tiny tropical isles. Dinosaurs succeeded where Komodo dragons fail."

"Twentieth-century paleontologists have fallen into the bad habit of reconstructing the dinosaurs' life functions by using crocodiles as a living model. But the earliest researchers of the nineteenth century proved beyond a doubt that the dinosaurs' powerful hind limbs must have operated like the limbs of gigantic birds."

"Dinosaurs are not lizards, and vice versa. Lizards are scaley reptiles of an ancient bloodline. The oldest lizards antedate the earliest dinosaurs by a full thirty million years. A few large lizards, such as the man-eating Komodo dragon, have been called "relicts of the dinosaur age", but this phrase is historically incorrect. No lizard ever evolved the birdlike characteristics peculiar to each and every dinosaur. A big lizard never resembled a small dinosaur except for a few inconsequential details of the teeth. Lizards never walk with the erect, long-striding gait that distinguishes the dinosaurlike ground birds today or the birdlike dinosaurs of the Mesozoic."

"Humans are proud of themselves. The guiding principle of the modern age is "Man is the measure of all things." And our bodies have excited physiologists and philosophers to a profound awe of the basic mammalian design. But the history of the dinosaurs should teach us some humility... If our fundamental mammalian mode of adaptation was superior to the dinosaurs', then history should record the meteoric rise of the mammals and the eclipse of the dinosaurs. Our own Class Mammalia did not seize the dominant position in life on land. Instead, the mammal clan was but one of many separate evolutionary families that succeeded as species only by taking refuge in small body size during the Age of Dinosaurs. As long as there were dinosaurs, a full 130 million years, remember, the warm-blooded league of furry mammals produced no species bigger than a cat."

"No one, either in the nineteenth century or the twentieth, has ever built a persuasive case proving that dinosaurs as a whole were more like reptilian crocodiles than warm-blooded birds. No one has done this because it can't be done."

"I do not be­lieve birds deserve to be put in a taxo­nomic class separate from dinosaurs."

"The dinosaurs are not extinct. The colorful and successful diversity of the living birds is a continuing expression of basic dinosaur biology."

"The total turtle count - two hundred and thirty species - doesn't seem like an irresistible horde compared to the several thousand mammals in today's global ecosystem. However, turtles have scored quite an impressive ecological triumph in one very important role, that of freshwater predator-omnivore... All through the Temperate Zone, otters delight the naturalist and the lay public. But how many other freshwater, semi-aquatic mammal predators can you name? Mink, of course. Relatives of otters on one hand, land weasels on the other, mink do hunt in streams. How many others? If you caught the excellent BBC series "Life on Earth", you saw footage of the swimming shrew, the Desman of the Pyrenees, a molelike furball that dives for aquatic worms and other freshwater small fry. Our own New England star-nosed mole goes hunting in water, using its starburst-shaped snout tip to feel out wriggling prey. Andean streams flowing through Preu are host to the fish-spearing mouse, Ichthyomys, that impales prey on its projecting front teeth. But if we go to a tropical lake or sluggish river, is it full of otters, mink, and paddling shrews? No, it is full of turtles."