Behavior Quote by Ayn Rand

Man is the only animal that learns by being hypocritical. He pretends to be polite and then, eventually, he becomes polite.

— Jean Kerr

When man decides he can control nature, he's in deep trouble

— Laura Dern

Man uses his intelligence less in the care of his own species than he does in his care of anything else he owns or…

— Abraham Myerson

It may be a mistake, that man, in a state of nature, is more disposed to cruelty than courtesy

— Mercy Otis Warren

Man must cease attributing his problems to his environment, and learn again to exercise his will - his personal responsibility in the realm of…

— Albert Schweitzer

Man is the unnatural animal, the rebel child of nature, and more and more does he turn himself against the harsh and fitful hand…

— H. G. Wells

It is only by having desire thwarted, and thereby learning to control it — in other words, by becoming civilized — that men become fully human.

— Theodore Dalrymple

Man is essentially the imitative animal. His whole educabilityand in fact the whole history of civilization depend on this trait, which his strong tendencies…

— William James

“At the beginning of human history, man lost some of the basic animal instincts in which an animal's behavior is embedded and by which…

— Viktor Emil Frankl

Civilized people are taught by logic, barbarians, by necessity, communities by tradition; and the lesson inculcated even in wild beasts by nature itself. They…

— Marcus Tullius Cicero

Man must be disciplined, for he is by nature raw and wild.

— Immanuel Kant

Man is fully responsible for his nature and his choices.

— Jean-Paul Sartre