If there is a God, there should be no slaves.

When passions and appetites are stronger than the intellect, men are savages; when the intellect governs the passions, when the passions are servants, men are civilized. The people need education - facts - philosophy.

If, with all the time at my disposal, with all the wealth of the resources of this vast universe, to do with as I will, I could not produce a better scheme of life than now prevails, I would be ashamed of my efforts and consider my work a humiliating failure.

We must remember that we have to make judges out of men, and that by being made judges their prejudices are not diminished and their intelligence is not increased.

Talent has the four seasons: spring, that is to say, the sowing of the seeds; summer, growth; autumn, the harvest; winter, intellectual death. But there is now and then a genius who has no winter, and, no matter how many years he may live, on the blossom of his thought no snow falls. Genius has the climate of perpetual growth.

Injustice upon earth renders the justice of of heaven impossible.

If abuses are destroyed, man must destroy them. If slaves are freed, man must free them. If new truths are discovered, man must discover them. If the naked are clothed; if the hungry are fed; if justice is done; if labor is rewarded; if superstition is driven from the mind; if the defenseless are protected, and if the right finally triumphs, all must be the work of man. The grand victories of the future must be won by man, and by man alone.