No man should escape our universities without knowing how little he knows.

He who knows best knows how little he knows.

Both the man of science and the man of action live always at the edge of mystery, surrounded by it.

Scientists are not delinquents. Our work has changed the conditions in which men live, but the use made of these changes is the problem of governments, not of scientists.

I saw what the Depression was doing to my students. Often they could get no jobs, or jobs which were wholly inadequate. And through them, I began to understand how deeply political and economic events could affect men's lives. I began to feel the need to participate more fully in the life of the community.

How shall a man escape from that which is written; How shall he flee from his destiny?