Concern for man and his fate must always form the chief interest of all technical endeavors. Never forget this in the midst of your diagrams and equations.

The most important question a person can ask is, "Is the Universe a friendly place?

I cannot conceive of a personal God who would directly influence the actions of individuals, or would directly sit in judgment on creatures of his own creation.

What interests me most is whether God could have made the world differently.

One does not make wars less likely by formulationg rules of warfare... war cannot be humanized. It can only be eliminated.

Only the one who does not question is safe from making a mistake.

The difference between what the most and the least learned people know is inexpressibly trivial in relation to that which is unknown.