Learning is experience. Everything else is just information.

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.

A desk, some pads, a pencil, and a large basket -- to hold all of mu mistakes.

If a man aspires towards a righteous life, his first act of abstinence is from injury to animals.

The fanatical atheists are like slaves who are still feeling the weight of their chains which they have thrown off after hard struggle. They are creatures who—in their grudge against traditional religion as the "opium of the masses"—cannot hear the music of the spheres.

Nothing truly valuable can be achieved except by the unselfish cooperation of many individuals.

When a man, after long years of searching, chances upon a thought which discloses something of the beauty of this mysterious universe, he should not therefore be personally celebrated. He is already sufficiently paid by his experience of seeking and finding.