A friend is, as it were, a second self.

A happy life consists in tranquility of mind.

A life of peace, purity, and refinement leads to a calm and untroubled old age.

A man's own manner and character is what most becomes him.

A mind without instruction can no more bear fruit than can a field, however fertile, without cultivation.

A room without books is like a body without a soul.

A university is what a college becomes when the faculty loses interest in students.

Advice is judged by results, not by intentions.

All action is of the mind and the mirror of the mind is the face, its index the eyes.

Art is born of the observation and investigation of nature.