To make good use of life, one should have in youth the experience of advanced years, and in old age the vigor of youth.

To believe with certainty, we must begin with doubting.

Long ailments wear out pain, and long hopes, joy.

The earnest desire of succeeding is almost always a prognostic of success.

What is fame? The advantage of being known by people of whom you yourself know nothing, and for whom you care as little.