Live as brave men; and if fortune is adverse, front its blows with brave hearts.
Kindness is produced by kindness.
It is not by muscle, speed, or physical dexterity that great things are achieved, but by reflection, force of character, and judgment.
No one dances sober, unless he is insane.
Philosophy is true mother of the arts [of science].
Too much liberty leads both men and nations to slavery.