The truth about an animal is far more exciting and altogether more beautiful than all the myths woven about it.

Man appears to be the missing link between anthropoid apes and human beings.

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

I believe that present day civilized man suffers from insufficient discharge of his aggressive drive

I believe that both art and the human striving for cognitive comprehension are manifest forms of the grand game in which nothing more is stipulated than the game's rules; both art and actively solicited perceptions are but special cases of the recurring creative act to which we owe our existence.

We do not take humor seriously enough.

In nature we find not only that which is expedient, but also everything which is not so inexpedient as to endanger the existence of the species.