A man who has once perceived, however temporarily and however briefly, what makes greatness of soul, can no longer be happy if he allows himself to be petty, self-seeking, troubled by trivial misfortunes, dreading what fate may have in store for him. The man capable of greatness of soul will open wide the windows of his mind, letting the winds blow freely upon it from every portion of the universe.

Most of the greatest evils that man has inflicted upon man have come through people feeling quite certain about something which, in fact, was false.

The three main extra-rational activities in modern life are religion, war, and love. all these are extra-rational, but love is not anti-rational, that is to say, a reasonable man may reasonably rejoice in its existence

The people who are regarded as moral luminaries are those who forego ordinary pleasures themselves and find compensation in interfering with the pleasures of others.

All the time that he can spare from the adornment of his person, he devotes to the neglect of his duties.

Why is propaganda so much more successful when it stirs up hatred than when it tries to stir up friendly feeling?

Folly is perennial and yet the human race has survived.