There is no salvation for civilization, or even the human race, other than the creation of a world government.

In their struggle for the ethical good, teachers of religion must have the stature to give up the doctrine of a personal god.

Nonsense, seems to sum up everything.

[Mystery] is the fundamental emotion that stands at the cradle of true art and true science.

Student: Dr. Einstein, Aren't these the same questions as last year's [physics] final exam? Dr. Einstein: Yes; But this year the answers are different.

Conventional words or other signs have to be sought for laboriously only in a second stage, where the associative play already referred to is sufficiently established and can be reproduced at will.

Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.