The human mind, in taking us down the path of technocracy, has become the adversary of life itself and collaterally the adversary of the human soul.

Historians will have to face the fact that natural selection determined the evolution of cultures in the same manner as it did that of species.

Few animals display their mood via facial expressions as distinctly as cats.

Visualize yourself confronted with the task of killing, one after the other, a cabbage, a fly, a fish, a lizard, a guinea pig, a cat, a dog, a monkey and a baby chimpanzee. In the unlikely case that you should experience no greater inhibitions in killing the chimpanzee than in destroying the cabbage or the fly, my advice to you is to commit suicide at your earliest possible convenience, because you are a weird monstrosity and a public danger.

I have found the missing link between the higher ape and civilized man; it is we.

Most of the vices and mortal sins condemned today correspond to inclinations that were purely adaptive or at least harmless in primitive man

Every mutation through a new combination of genetic factors that provides the organism with a new opportunity for coming to terms with the conditions of its environment signifies no more and no less than that new information about this environment has got into that organic system. Adaptation is essentially a cognitive process.