Civilization does not have to perish. The brutes are winning only by default.

Independence is the recognition of the fact that yours is the responsibility of judgement and nothing can help you escape it - that no substitute can do your thinking, as no pinch-hitter can live your life.

You have been the one encounter in my life that can never be repeated

Only the man who does not need it, is fit to inherit wealth, the man who would make his fortune no matter where he started.

Ideas are the greatest and most crucially practical power on earth.

We have come to see how great is the unexplored.

My greatest personal mistake is ever to allow a word or moment that “doesn’t count,” i.e., that I do not refer to my own basic principles. Every word, every action, every moment counts. (This is the pattern on which everybody makes mistakes [or] becomes irrational — not relating their one action or one conviction to another.