The led must not be compelled; they must be able to choose their own leader.

The world needs heroes and it's better they be harmless men like me than villains like Hitler

The only thing that you absolutely have to know, is the location of the library.

Not until the creation and maintenance of decent conditions of life for all men are recognized and accepted as a common obligation of all men and all countries — not until then shall we, with a certain degree of justification, be able to speak of mankind as civilized.

A knowledge of the existence of something we cannot penetrate, of the manifestations of the profoundest reason and the most radiant beauty - it is this knowledge and this emotion that constitute the truly religious attitude; in this sense, and in this alone, I am a deeply religious man.

One may say the eternal mystery of the world is its comprehensibility.

Most people say that it is the intellect which makes a great scientist. They are wrong: it is character.