In my opinion there is no other salvation for civilization and even for the human race than the creation of a world government with security on the basis of law. As long as there are sovereign states with their separate armaments and armament secrets, new world wars cannot be avoided.

Physical concepts are free creations of the human mind, and are not, however it may seem, uniquely determined by the external world.

I never said half the crap people said I did.

It is a magnificent feeling to recognize the unity of complex phenomena which appear to be things quite apart from the direct visible truth.

I love to travel, but hate to arrive.

I am also convinced that one gains the purest joy from spirited things only when they are not tied in with earning one's livelihood.

The intuitive mind is a sacred gift.