Every living being seeks instinctively to complete itself.

Common sense is calculation applied to life.

If ignorance and passion are the foes of popular morality, it must be confessed that moral indifference is the malady of the cultivated classes.

Work while you have the light. You are responsible for the talent that has been entrusted to you.

Time and space are fragments of the infinite for the use of finite creatures.

Learn to limit yourself; to content yourself with some definite work; dare to be what you are and learn to resign with a good grace all that you are not; and to believe in your own individuality.

He who is silent is forgotten; he who does not advance falls back; he who stops is overwhelmed; out distanced, crushed; he who ceases t grow becomes smaller; he who leaves off, gives up; the condition of standing still is the beginning of the end.