True love is love that stays constant for ever, whatever it's fortune; whether requited or scored, filled or sent empty away.

Piety is not a goal but a means to attain through the purest peace of mind the highest culture.

Divide and command, a wise maxim; Unite and guide, a better.

Nature does not suffer her veil to be taken from her, and what she does not choose to reveal to the spirit, thou wilt not wrest from her by levers and screws.

Mannerism is always longing to have done, and has no true enjoyment in work. A genuine, really great talent, on the other hand, has its greatest happiness in execution.

The history of science is science itself; the history of the individual, the individual.

Where there are no women there are no good manners