Teacher

The desire to know is natural to good men.

One can have no smaller or greater mastery than mastery of oneself.

Iron rusts from disuse; stagnant water loses its purity and in cold weather becomes frozen; even so does inaction sap the vigor of the mind.

Men of lofty genius when they are doing the least work are the most active.

He who wishes to be rich in a day will be hanged in a year.

Simplicity is the ultimate form of sophistication.

I wish to work miracles...

The painter will produce pictures of little merit if he takes the works of others as his standard.

To me it seems that those sciences are vain and full of error which are not born of experience, mother of all certainty, first hand experience which in its origins, or means, or end has passed through one of the five senses.