From the errors of others, a wise man corrects his own.

Nature and books belong to the eyes that see them.

A poem begins in delight and ends in wisdom.

The doors of wisdom are never shut.

It is a characteristic of wisdom not to do desperate things.

Does wisdom perhaps appear on the earth as a raven which is inspired by the smell of carrion?

Wisdom stands at the turn in the road and calls upon us publicly, but we consider it false and despise its adherents.

Give me a lever long enough and a fulcrum on which to place it, and I shall move the world.

All this worldly wisdom was once the unamiable heresy of some wise man.

Don't follow any advice, no matter how good, until you feel as deeply in your spirit as you think in your mind that the counsel is wise.