Scientific truth is universal, because it is only discovered by the human brain and not made by it, as art is.

Barking dogs may occasionally bite, but laughing men hardly ever shoot!

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

The fidelity of a dog is a precious gift demanding no less binding moral responsibilities than the friendship of a human being.

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.

The rushed existence into which industrialized, commercialized man has precipitated himself is actually a good example of an inexpedient development caused entirely by competition between members of the same species. Human beings of today are attacked by so-called manager diseases, high blood pressure, renal atrophy, gastric ulcers, and torturing neuroses: they succumb to barbarism because they have no more time for cultural interests.

The neuro-physiological organization which we call instinct functions in a blindly mechanical way, particularly apparent when its function goes wrong.