Jealousy is the paralysis of love.

There are men who are happy without knowing it.

The conscience of the dying belies their life.

Persevere in the fight, struggle on, do not let go, think magnanimously of man and life, for man is good and life is affluent and fruitful.

It is unjust to exact that men shall do out of deference to our advice what they have no desire to do for themselves.

The maxim that men are not to be praised before their death was invented by envy and too lightly adopted by philosophers.

Superficial knowledge ... is hurtful to those who possess true genius; for it necessarily draws them away from their main object, wastes their industry over details and subjects foreign to their needs and natural talent, and lastly does not serve, as they flatter themselves, to prove the breadth of their mind. In all ages there have been men of very moderate intelligence who knew much, and so on the contrary, men of the highest intelligence who knew very little. Ignorance is not lack of intelligence, nor knowledge a proof of genius.