Physician, help yourself: thus help your patient too. Let this be his best help: that he may behold with his eyes the man who heals himself.

The same relation exists between merchant and pirate, who for a long period are one and the same person: where the one function appears to them inadvisable, they exercise the other.

He who attains his ideal, precisely thereby surpasses it.

Once and for all, there are many things I choose not to know.--Wisdom sets limits even to knowledge.

I am too inquisitive, too skeptical, too arrogant, to let myself be satisfied with an obvious and crass solution of things. God is such an obvious and crass solution; a solution which is a sheer indelicacy to us thinkers - at bottom He is really nothing but a coarse commandment against us: ye shall not think!

The belief in authority is the source of conscience; which is therefore not the voice of God in the heart of man, but the voice of some men in man.

We set no special value on the possession of a virtue until we percieve that it is entirely lacking in our adversary.