Where the world ceases to be the scene of our personal hopes and wishes, where we face it as free beings admiring, asking and observing, there we enter the realm of Art and Science.

I never made one of my discoveries through the process of rational thinking

Since the mathematicians have invaded the theory of relativity I do not understand it myself any more.

I do not much believe in education. Each person ought to be his or her own model, however frightful that may be.

The aim (of education) must be the training of independently acting and thinking individuals who, however, see in the service to the community their highest life problem.

The distinctions separating the social classes are false; in the last analysis they rest on force.

Formal symbolic representation of qualitative entities is doomed to its rightful place of minor significance in a world where flowers and beautiful women abound.