The greatest problem for the human species, the solution of which nature compels him to seek, is that of attaining a civil society which can administer justice universally.

The bad thing of war is, that it makes more evil people than it can take away.

Physicians think they do a lot for a patient when they give his disease a name.

Parents usually educate their children merely in such a manner than however bad the world may be, they may adapt themselves to its present conditions. But they ought to give them an education so much better than this, that a better condition of things may thereby be brought about by the future.

Prudence reproaches; conscience accuses.

Enlightenment is man's emergence from his self-incurred immaturity.

Two things awe me most, the starry sky above me and the moral law within me.