All the fairy tales of Aladdin, or the invisible Gyges, or the talisman that opens kings' palaces, or the enchanted halls underground or in the sea, are only fictions to indicated the one miracle of intellectual enlargement.

Lose yourself in nature and find peace

Let a man behave in his own house as a guest.

The spirit of the world, the great calm presence of the creator, comes not forth to the sorceries of opium or of wine.

New arts destroy the old.

I do not see how a barbarous community and a civilized community can constitute a state. I think we must get rid of slavery or we must get rid of freedom.

The multitude of the sick shall not make us deny the existence of health.