Our most important thoughts are those that contradict our emotions.

Conscience reigns but it does not govern.

The folly of mistaking a paradox for a discovery, a metaphor for a proof, a torrent of verbiage for a spring of capital truths, and oneself for an oracle, is inborn in us.

In the physical world, one cannot increase the size or quantity of anything without changing its quality. Similar figures exist only in pure geometry.

The wind is rising ... we must attempt to live.

Serious people have few ideas. People with ideas are never serious.

To penetrate one's being, one must go armed to the teeth.