Every kind of peaceful cooperation among men is primarily based on mutual trust and only secondarily on institutions such as courts of justice and police.

Everything has changed except the way man thinks (when the hydrogen bomb was exploded)

In the teaching of geography and history a sympathetic understanding (should) be fostered for the characteristics of the different peoples of the world, especially for those who we are in the habit of describing as "primitive.

Isn't it strange that I who have written only unpopular books should be such a popular fellow?

The problems that exist in this world can not be solved by the level of thinking that created them.

The individual feels the futility of human desires and aims and the sublimity and marvelous order which reveal themselves both in nature and in the world of thought.

Study and, in general, the pursuit of truth and beauty is the sphere in which we are permitted to remain children all our lives." "Study and, in general, the pursuit of truth and beauty is the sphere in which we are permitted to remain children all our lives.