He (Thomas Ray) had discovered that the notion of a host-parasite arms — Matt Ridley

"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."

"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."

"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."

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