One's only failure is failing to live up to one's own possibilities.

People are not evil; they are schlemiels.

My feeling is that the concept of creativeness and the concept of the healthy, self actualizing, fully human person seem to be coming closer and closer together, and may perhaps turn out to be the same thing

It isn't normal to know what we want. It is a rare and difficult psychological achievement.

The best way to view a present problem is to give it all you've got, to study it and its nature, to perceive within it the intrinsic interrelationships, to discover the answer to the problem within the problem itself.

I have discovered the missing link between the anthropoid apes and civilized men. It's us!

False optimism sooner or later means disillusionment , anger and hopelessness.