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April 10, 2026
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"In history, and in evolution, progress is always a futile, Sisyphean struggle to stay in the same relative place by getting ever better at things. Cars move through the congested streets of London no faster than horse-drawn carriages did a century ago."
"Breeding, in sexual species, consists of finding an appropriate partner and persuading it to part with a package of genes. This goal is so central to life that it has influenced the design not only of the body but of the psyche. Simply put, anything that increases reproductive success will spread at the expense of anything that does notâeven if it threatens survival."
"When a neo-Darwinian asks, âWhy?â he is really asking âHow did this come about?â He is a historian."
"Yet the myth persists that genetic determinism is a more implacable kind of fate than social determinism."
"In behavior, as in appearance, every human individual is unique."
"It is no harder to explain than a game of cards. There are aces and kings and twos and threes in any deck of cards. A lucky player is dealt a high-scoring hand, but none of his cards is unique. Elsewhere in the room are others with the same kinds of cards in their hands. But even with just thirteen kinds of cards, every hand is different and some are spectacularly better than others. Sex is merely the dealer, generating unique hands from the same monotonous deck of genetic cards shared by the whole species."
"The more competitive nature of men is a consequence of sexual selection. Men have evolved to live dangerously because success in competition or battle used to lead to more or better sexual conquests and more surviving children. Women who live dangerously merely put at risk those children they already have. Likewise, the intimate connection between female beauty and female reproductive potential (beautiful women are almost by definition young and healthy; compared with older women, they are therefore both more fertile and have a longer reproductive life ahead of them) is a consequence of sexual selection acting on both menâs psyches and womenâs bodies. Each sex shapes the other. Women have hourglass-shaped bodies because men have preferred them that way. Men have an aggressive nature because women have preferred them that way (or have allowed aggressive men to defeat other men in contests over womenâit amounts to the same thing)."
"People are attracted to people of high reproductive and genetic potentialâthe healthy, the fit, and the powerful. The consequences of this fact, which goes under the name of sexual selection, are bizarre in the extreme."
"I have gradually come to realize that almost all of social science proceeds as if 1859, the year of the publication of the Origin of Species, had never happened; it does so quite deliberately, for it insists that human culture is a product of our own free will and invention. Society is not the product of human psychology, it asserts, but vice versa. That sounds reasonable enough, and it would be splendid for those who believe in social engineering if it were true, but is is simply not true."
"We assume, and rightly that a Russian is just as human after two generations of oppressive totalitarianism as his grandfather was before him. But why, then, does social science proceed as if it were not the case, as if peopleâs natures are the products of their societies?"
"There is, therefore, such a thing as a universal human nature, common to all people."
"The study of human nature must have profound implications for the study of history, sociology, psychology, anthropology, and politics. Each of those disciplines is an attempt to understand human behavior, and if the underlying universals of human behavior are the product of evolution, then it is vitally important to understand what the evolutionary pressures were."
"Below the surface of every banality and clichĂŠ there lies irony, cynicism, and profundity."
"The idea that we were designed by our past was the principal insight of Charles Darwin. He was the first to realize that you can abandon divine creation of species without abandoning the argument from design. Every living thing is âdesignedâ quite unconsciously by the selective reproduction of its own ancestors to suit a particular life-style."
"Just as human nature is the same everywhere, so it is recognizably the same as it was in the past."
"The sex that invests the least has time to spare to seek other mates. Therefore, broadly speaking, males invest less and seek quantity of mates, while females invest more and seek quality of mates."
"I sell here, Sir, what all the world desires to haveâpower."
"I know of no other way that human nature can have developed except by evolution, and there is now overwhelming evidence that there is no other way for evolution to work except by competitive reproduction. Those strains that reproduce persist; those that do not reproduce die out."
"Culture is transmitted autonomously from each childrenâs peer group to the next and not from parent to childâwhich is why, for example, the move towards greater adult sexual equality has had zero effect on willing sexual segregation in the playground. As every parent knows, children prefer to imitate peers than parents. Psychology, like sociology and anthropology, has been dominated by those with a strong antipathy to genetic explanations; it can no longer sustain such ignorance."
"In Sigmund Freudâs psychology, John Watsonâs behaviourism and Margaret Meadâs anthropology, nurture-determinism by parents was never tested, only assumed. Yet the evidence, from twin studies, from the children of immigrants and from adoption studies, is now staring us in the face: people get their personalities from their genes and from their peers, not from their parents."
"Everything can be inherited except sterility. None of your direct ancestors died childless. Consequently, if we are to understand how human nature evolved, the very core of our inquiry must be reproduction, for reproductive success is the examination that all human genes must pass if they are not to be squeezed out by natural selection. Hence I am going to argue that there are very few features of the human psyche and nature that can be understand without reference to reproduction. I begin with sexuality itself."
"At its birth eugenics was not a politicised science; it was a science-ised political creed."
"I have a hard time imagining how my memory of the meaning of the word âvoladoâ consists of some strengthened synaptic connections between a few neurons. It is distinctly mind-boggling. Yet far from having removed the mystery from the problem by reducing it to the molecular level, I feel that scientists have opened before me a new and intriguing mystery, the mystery of trying to imagine how connections between nerve cells not only provide the mechanism of memory but are memory. It is every bit as thrilling a mystery as quantum physics, and a great deal more thrilling than Ouija boards and flying saucers."
"The story of p53 and the oncogenes, like much of my book, challenges the argument that genetic research is necessarily dangerous and should be curtailed. The story also strongly challenges the view that âreductionistâ science, which takes systems apart to understand them, is flawed and futile. Oncology, the medical study of whole cancers, diligent, brilliant and massively endowed though it was, achieved terribly little in comparison with what has already been achieved in a few years by a reductionist, genetic approach."
"The subject of learning lies in the provinces of neuroscience and psychology. It is the opposite of instinct. Instinct is generically-determined behaviour; learning is behaviour modified by experience."
"Natural selection has designed all parts of our bodies to last just long enough to see our children into independence, no more."
"The question is not whether nurture has a role to play, because nobody of any sense has ever gone on record as denying that it does, but whether nature has a role to play at all. When my one-year-old daughter discovered a plastic baby in a toy pram one day while I was writing this chapter, she let out the kinds of delighted squeals that her brother had reserved at the same age for passing tractors. Like many parents, I found it hard to believe that this was purely because of some unconscious social conditioning that we had imposed. Boys and girls have systematically different interests from the very beginning of autonomous behaviour."
"The politicisation of the issue has had absurd results."
"Held up as a proof of socially constructed gender roles, he proved the exact opposite: that nature does play a role in gender. The evidence from zoology has always pointed that way: male behaviour is systemically different from female behaviour in most species and the difference has an innate component. The brain is an organ with innate gender. The evidence from the genome, from imprinted genes and genes for sex-linked behaviours, now points to the same conclusion."
"The evolutionary implication is that we are descended from a common ancestor with flies which used the same way of defining the pattern of the embryo more than 530 million years ago, and that the mechanism was so good that all this dead creatureâs descendants have hung on to it."
"What is true of mice is just as true of people. Flies and people are just variations on a theme of how to build a body that was laid down in some worm-like creature in the Cambrian period. They still retain the same genes doing the same job. Of course, there are differences; if there are not, we would look like flies. But the differences are surprisingly subtle."
"These two processesâlinguistic philology and genetic phylogenyâare converging upon a common theme: the history of human migrations."
"It underscores yet again the fact that what we call personality is to a considerable degree a question of brain chemistry."
"The fuel on which science runs is ignorance. Science is like a hungry furnace that must be fed logs from the forests of ignorance that surround us. In the process, the clearing we call knowledge expands, but the more it expands, the longer its perimeter and the more ignorance comes into view."
"Judges were never very good at science."
"Just as we underestimate the degree to which human brains rely upon instincts, so we have generally underestimated the degree to which other animals are capable of learning."
"The main purpose of most genes in the human genome is regulating the expression of other genes in the genome."
"This led to a neat generalization, which is so tidy it ought to be true and probably would be if physicists ran the world: every animal has roughly the same number of heartbeats per lifetime. An elephant lives longer than a mouse, but its pulse rate is so much slower that, measured in heartbeats, they both live lives of the same length."
"The conclusions of both behaviour genetics and evolutionary psychology remain distinctly unpalatable to many non-scientists, whose main objection is a superficially reasonable argument from incredulity. How can a gene, a stretch of DNA âlettersâ, cause a behaviour? What conceivable mechanism could link a recipe for a protein with an ability to learn the rule for making the past tense in English? I admit that this seems at first sight a mighty leap, requiring more faith than reason. But it need not be, because the genetics of behaviour is, at root, no different from the genetics of embryonic developmentâŚThe idea of genes for behaviour is no more strange than the idea of genes for development. Both are mind-boggling, but nature has never found human incomprehension a reason for changing her methods."
"If you still thought evolution was about the good of the species, stop thinking so right now."
"Sexual relations are driven not by what is good, in evolutionary terms, for men or for women, but for their chromosomes. The ability to seduce a woman was good for Y chromosomes in the past; the ability to resist seduction by a man was good for X chromosomes in the past."
"No matter that the social sciences set about reinventing much more alarming forms of determinism to take the place of the genetic form: the parental determinism of Freud; the socio-economic determinism of Marx; the political determinism of Lenin; the peer-pressure cultural determinism of Franz Boas and Margaret Mead; the stimulus-response determinism of John Watson and B. F. Skinner; the linguistic determinism of Edward Sapir and Benjamin Whorf. In one of the great diversions of all time, for nearly a century social scientists managed to persuade thinkers of many kinds that biological causality was determinism while environmental causality preserved free will; and that animals had instincts, but human beings did not."
"As you grow up, you gradually express your own innate intelligence and leave behind the influences stamped on you by others. You select the environments that suit your innate tendencies, rather than adjusting your innate tendencies to the environments you find yourself in. This proves two vital things: that genetic influences are not frozen at conception and that environmental influences are not inexorably cumulative. Heritability does not mean immutability."
"In egalitarian societies, genes matter more."
"Nobody doubts that genes can shape anatomy. The idea that they also shape behaviour takes a lot more swallowing."
"The genome is littered, one might almost say clogged, with the equivalent of computer viruses, selfish, parasitic stretches of letters which exist for the pure and simple reason that they are good at getting themselves duplicated. We are full of digital chain letters and warnings about marmalade."
"A month after the Watson-Crick structure was published, Britain crowned a new queen and a British expedition conquered Mount Everest on the same day. Apart from a small piece in the News Chronicle, the double helix did not make the newspapers. Today most scientists consider it the most momentous discovery of the century, if not the millennium."
"No horoscope matches this accuracy. No theory of human causality, Freudian, Marxist, Christian or animist, has ever been so precise. No prophet in the Old Testament, no entrail-gazing oracle in ancient Greece, no crystal-ball gipsy clairvoyant on the pier at Bognor Regis ever pretended to tell people exactly when their lives would fall apart, let alone got it right. We are dealing here with a prophecy of terrifying, cruel and inflexible truth."
"No study of the causes of intelligence has failed to find a substantial heritability."
"In species where the females get nothing useful from their mates, they seem to choose on aesthetic criteria alone."