Thoughts have no sex.

Thoughts are not subject to duty.

We lift ourselves by our own thought; we climb upon our vision of ourselves.

A man can stand a lot as long as he can stand himself. He can live without hope, without friends, without books, even without music, as long as he can listen to his own thoughts.

What we picture ourselves to be, we become.

By thought I embrace the universal.

We can all do good deeds, but very few of us can think good thoughts.

Thinking is the talking of the soul with itself.

We become what we contemplate.

Act quickly, think slowly.