I believe that whoever tries to think things through honestly will soon recognize how unworthy and even fatal is the traditional bias against Negroes. What can the man of good will do to combat this deeply rooted prejudice? He must have the courage to set an example by words and deed, and must watch lest his children become influenced by racial bias.

God reveals himself in the orderly harmony of what exists.

The most practical solution is a good theory.

It is my inner conviction that the development of science seeks in the main to satisfy the longing for pure knowledge.

What is inconceivable about the universe is that it is at all conceivable.

If we have the courage to decide ourselves for peace we will have peace.

The human mind has first to construct forms, independently, before we can find them in things.