For a man to achieve all that is demanded of him he must regard himself as greater than he is.

I don't know a greater advantage, than to appreciate the worth of an enemy.

Science and art belong to the whole world, and before them vanish the barriers of nationality.

Tolerance should really be only a temporary attitude; it must lead to recognition. To tolerate means to offend.

Life is but a preparation for what there is to come.

Ill-humor is nothing more than an inward feeling of our own want of merit, a dissatisfaction with ourselves which is always united with an envy that foolish vanity excites.

He who is plenteously provided for from within needs but little from without.