Independent of others and in concert with others, your main task in life is to do what you can best do and become what you can potentially be.

The capacity to be puzzled is the premise of all creation, be it in art or in science.

Man is born as a freak of nature, being within nature and yet transcending it. He has to find principles of action and decision-making which replace the principles of instincts.

We forget that, although freedom of speech constitutes an important victory in the battle against old restraints, modern man is in a position where much of what "he" thinks and says are the things that everybody else thinks and says; that he has not acquired the ability to think originally - that is, for himself - which alone gives meaning to his claim that nobody can interfere with the expression of his thoughts.

Actually, if you take the average American, and studies have shown that, he is really concerned only with private affairs; that is to say, with his health, his money and family affairs.

Human history began with an act of disobedience and it is not unlikely that it will be terminated by an act of obedience.

We can express ideas without being afraid of being killed or imprisoned.