The heaviest object in the world is the body of the woman you have ceased to love.
As it is natural to believe many things without proof, so, despite all proof, is it natural to disbelieve others.
Men are not to be judged by what they do not know, but by what they know, and by the manner in which they know it.
A new principle is an inexhaustible source of new views.
Great men, like nature, use simple language.
Consciousness of our strength increases it.