Time and space are not conditions of existence, time and space is a model for thinking

The emotional state that leads to achievements resembles that of a worshiper or the lover.

The basic laws of the universe are simple, but because our senses are limited, we can’t grasp them. There is a pattern in creation.

People will not disarm step by step; they will disarm at one blow or not at all.

The truth of a theory can never be proven, for one never knows if future experience will contradict its conclusions.

That which is impenetrable to us really exists. Behind the secrets of nature remains something subtle, intangible, and inexplicable. Veneration for this force beyond anything that we can comprehend is my religion.

When the nazis came to power, I looked to the universities that prided themselves upon their intellectual freedom, and they failed me. I looked to the German press, which prided itself on the freedom of the press, and it failed me. Until at last the churches stood alone, and that for which I once had little regard earned my respect.