If someone feels that he has never made a mistake in his life, it only means that he has never tried anything new in his life.

The music of Mozart is of such purity and beauty that one feels he merely found it - that it has always existed as part of the inner beauty of the universe waiting to be revealed.

You think you have troubles with mathematics . . . I assure you mine are still bigger.

The really valuable thing in the pageant of human life seems to me not the political state, but the creative, sentient individual, the personality; it alone creates the noble and the sublime, while the herd as such remains dull in thought and dull in feeling.

The most important decision we make is whether we believe we live in a friendly or hostile universe.

The foundation of morality should not be made dependent on myth nor tied to any authority lest doubt about the myth or about the legitimacy of the authority imperil the foundation of sound judgment and action.

I have always eaten animal flesh with a somewhat guilty conscience.