The highest point to which a weak but experienced mind can rise is detecting the weakness of better men.

Man is to be found in reason, God in the passions.

One should never trust a person who, while assuring you of something, puts his hands on his heart.

Above all things expand the frontiers of science: without this the rest counts for nothing.

If all else fails, the character of a man can be recognized by nothing so surely as by a jest which he takes badly.

It is too bad if you have to do everything upon reflection and can't do anything from early habit.

There is something in our minds like sunshine and the weather, which is not under our control. When I write, the best things come to me from I know not where.