Science Authors

"Sexual selection theory suggests that much of the behavior and some of the appearance of an animal is adapted not to help it survive but to help it to acquire the best or the most mates."

"Sex keeps the parasite guessing."

"A gene is by definition the descendant of a gene that was good at getting into future generations."

"Parasites invent new keys; hosts change the locks. There is an obvious group-selectionist argument here for sex: At any one time a sexual species will have lots of different locks; members of an asexual one will all have the same locks. So the parasite with the right key will quickly exterminate the asexual species but not the sexual one. Hence the well-known fact: By turning our fields over to monocultures of increasingly inbred strains of wheat and maize, we are inviting the very epidemics of disease that can only be fought by the pesticides we are forced to use in ever larger quantities."

"Wherever you look in the historical record, the elites favored sons more than other classes….Lower down the social scale, daughters are preferred even today."

"Computer viruses have since become a worldwide problem. It begins to look as if parasites are inevitable in any system of life."

"He (Thomas Ray) had discovered that the notion of a host-parasite arms race is one of the most basic and unavoidable consequences of evolution."

"The process of choosing somebody to have sex with, which used to be known as falling in love, is mysterious, cerebral, and highly selective."

"The longer your generation time, the more genetic mixing you need to combat your parasites."

"Psychologists sometimes wonder why people are endowed with the ability to learn the part of Hamlet or understand calculus when neither skill was of much use to mankind in the primitive conditions where his intellect was shaped. Einstein would probably have been as hopeless as anybody in working out how to catch a woolly rhinoceros. Nicholas Humphrey, a Cambridge psychologist, was the first to see clearly the solution to this puzzle. We use our intellects not to solve practical problems, but to outwit each other. Deceiving people, detecting deceit, understanding people’s motives, manipulating people—these are what the intellect is used for. So what matters is not how clever and crafty you are, but how much cleverer and craftier than other people. The value of intellect is infinite. Selection within the species is always going to be more important than selection between the species."

"But as we shall see, the appearance is misleading. Animal altruism is a myth. Even in the most spectacular cases of selflessness it turns out that animals are serving the selfies interests of their own genes—if sometimes being careless with their bodies."

"Evolving is not a goal but a means to solving a problem."

"The things that kill animals or prevent them from reproducing are only rarely physical factors. Far more often other creatures are involved—parasites, predators, and competitors."

"That life is chemistry is true but boring, like saying that football is physics."

"Parasites provide exactly the incentive to change genes every generation that sex seems to demand. The success of the genes that defended you so well in the last generation may be the best of reasons to abandon the same gene combinations in the next. By the time the next generation comes around, the parasites will have surely evolved an answer to the defense that worked best in the last generation. It is a bit like sport. In chess or in football, the tactic that proves most effective is soon the one that people learn easily to block. Every innovation in attack is soon countered by another in defense."

"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."

"Nature is not inflexible but malleable. Moreover, the most natural thing of all about evolution is that some natures will be pitted against others. Evolution does not lead to Utopia. It leads to a land in which what is best for a man may be the worst for another man, or what is best for a woman may be the worst for a man."

"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 not—even if it threatens survival."

"One of the peculiar features of history is that time always erodes advantage. Every invention sooner or later leads to a counterinvention. Every success contains the seeds of its own overthrow. Every hegemony comes to an end. Evolutionary history is no different."

"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 men’s psyches and women’s 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 women—it amounts to the same thing)."

"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."

"People are attracted to people of high reproductive and genetic potential—the healthy, the fit, and the powerful. The consequences of this fact, which goes under the name of sexual selection, are bizarre in the extreme."

"Below the surface of every banality and cliché there lies irony, cynicism, and profundity."

"When a neo-Darwinian asks, “Why?” he is really asking “How did this come about?” He is a historian."

"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 people’s natures are the products of their societies?"

"There is, therefore, such a thing as a universal human nature, common to all people."

"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."

"Just as human nature is the same everywhere, so it is recognizably the same as it was in the past."

"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 “designed” quite unconsciously by the selective reproduction of its own ancestors to suit a particular life-style."

"In behavior, as in appearance, every human individual is unique."

"I asked John Maynard Smith, one of the first people to pose the question “Why sex?,” whether he still thought some new explanation was needed. “No. We have the answers. We cannot agree on them, that is all.”"

"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."

"As instruments of global climatic change, we humans now rival such cataclysmic events as supercontinent breakups and asteroid impacts."

"Our tenancy on this planet is not guaranteed."

"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."

"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."

"Reproducing sexually must improve an individual’s reproductive success or else sex would not persist. It is increasingly hard to understand how human beings came to be so clever without considering sexual competition."

"Sex is recombination plus outcrossing; their mixing of genes is its principal feature….So sex equals genetic mixing."

"Life consists of the interplay of two kinds of chemicals: proteins and DNA."

"Evolution is something that happens to organisms. It is a directionless process that sometimes make’s an animal’s descendants more complicated, sometimes simpler, and sometimes changes them not at all. We are so steeped in notions of progress and self-improvement that we find it strangely hard to accept this. But nobody has told the coelacanth, a fish that lives off Madagascar and looks exactly like its ancestors of 300 million years ago, that it has broken some law by not “evolving.”"

"Rational optimism holds that the world will pull out of the current crisis because of the way that markets in goods, services and ideas allow human beings to exchange and specialise honestly for the betterment of all. So this is not a book of unthinking praise or condemnation of all markets, but it is an inquiry into how the market process of exchange and specialisation is older and fairer than many think and gives a vast reason for optimism about the future of the human race. Above all, it is a book about the benefits of change. I find that my disagreement is mostly with reactionaries of all political colours: blue ones who dislike cultural change, red ones who dislike economic change and green ones who dislike technological change."

"Yet the myth persists that genetic determinism is a more implacable kind of fate than social determinism."

"Full responsibility for one’s actions is a necessary fiction without which the law would flounder, but it is a fiction all the same. To the extent that you act in character you are responsible for your actions; yet acting in character is merely expressing the many determinisms that caused your character."

"This interaction of genetic and external influences makes my behaviour unpredictable, but not undetermined."

"Determinism looks backwards to the causes of the present state, not forward to the consequences."

"Culture is transmitted autonomously from each children’s peer group to the next and not from parent to child—which 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."

"Freedom lies in expressing your own determinism, not somebody else’s. It is not the determinism that makes a difference, but the ownership. If freedom is what we prefer, then it is preferable to be determined by forces that originate in ourselves and not in others."

"So there is no escape from determinism by appealing to socialization. Either effects have causes or they do not. If I’m timid because of something that happened to me when I was young, that event is no less deterministic than a gene for timidity. The greater mistake is not to equate determinism with genes, but to mistake determinism for inevitability."

"The politicisation of the issue has had absurd results."