It takes two to make a woman into a sex object.

Man is the only mammal whose normal method of locomotion is to walk on two legs. A pattern of mammal behavior that emerges only once in the whole history of life on earth takes a great deal of explaining.

The trouble with specialists is that they tend to think in grooves.

It takes two to make a woman into a sex object.

The legend of the jungle heritage and the evolution of man as a hunting carnivore has taken root in man's mind ... He may even believe that equal pay will do something terrible to his gonads.

Where else is fatness at a premium? The answer is clear. There are two classes of mammals which are liable to accumulate large quantities of adipose tissue - hibernating mammals and aquatic mammals.

I believe the deeply rooted semantic confusion between 'man' as a male and 'man' as a species has been fed back into and vitiated a great deal of the speculation that goes on about the origins, development, and nature of the human race.