Life is like riding a bicycle. To keep your balance you must keep moving.

True ease in writing comes from art, not chance.

The truest greatness lies in being kind, the truest wisdom in a happy mind.

Liberty, taking the word in its concrete sense, consists in the ability to choose.

Don't allow your mind to tell your heart what to do. The mind gives up easily.

Restlessness is discontent, and discontent is the first necessity of progress.

To understand God's thoughts we must study statistics.