I have not eaten enough of the tree of knowledge, though in my profession I am obligated to feed on it regularly.

Intellectuals solve problems, geniuses prevent them.

Any fool can know. The point is to understand.

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.

If the workers of this world, men and women, decide not to manufacture and transport ammunition, it would end war for all time. We must do that. Dedicate our lives to drying up the source of war; ammunition factories.

Every day I remind myself that my inner and outer life are based on the labors of other men, living and dead, and that I must exert myself in order to give in the same measure as I have received and am still receiving.

To dwell on the things that depress or anger us does not help in overcoming them. One must knock them down alone.