It is one of my sources of happiness never to desire a knowledge of other people's business.

Real knowledge is to know the extent of one's ignorance.

Knowledge is the eye of desire and can become the pilot of the soul.

Life is given to us, we earn it by giving it.

Our knowledge can only be finite, while our ignorance must necessarily be infinite.

It's not just about being better. It's about being different. You need to give people a reason to choose your business.

The only good is knowledge, and the only evil is ignorance.

Without knowledge, action is useless and knowledge without action is futile.

Perfection is attained by slow degrees; it requires the hand of time.