To argue with a man who has renounced the use and authority of reason, and whose philosophy consists in holding humanity in contempt, is like administering medicine to the dead, or endeavoring to convert an atheist by scripture.

Every age and generation must be as free to act for itself.

Wrong cannot have a legal descendant.

Of all the tyrannies that effect mankind, tyranny in religion is the worst; every other species of tyranny is limited to the world we live in; but this attempts to stride beyond the grave, and seeks to pursue us into eternity.

My country is the world, and my religion is to do good.

The Vatican is a dagger in the heart of Italy.

... a thirst for power is the natural disease of monarchy.