Politics is for the present, but an equation is for eternity.
The most important decision we make is whether we believe we live in a friendly or hostile universe.
A person who never made a mistake never tried anything new.
Never lose a holy curiosity. Try not to become a man of success but rather try to become a man of value. He is considered successful in our day who gets more out of life than he puts in. But a man of value will give more than he receives.
Don't wait for miracles, your whole life is a miracle.
Without the sense of fellowship with men of like mind... life would have seemed to me empty.