I fear animals regard man as a creature of their own kind which has in a highly dangerous fashion lost its healthy animal reason - as the mad animal, as the laughing animal, as the weeping animal, as the unhappy animal.

You should seek your enemy, you should wage your war - a war for your opinions. And when your opinion is defeatedy our honesty should still cry triumph over that!

Certitude drives people mad.

The love of truth has its reward in heaven and even on earth.

Be generous in nature and thought; for this wins respect and gives confidence and power.

Our writing equipment takes part in forming our thoughts.

One thing a man must have: either a naturally light disposition or a disposition lightened by art and knowledge.