For having lived long, I have experienced many instances of being obliged, by better information or fuller consideration, to change opinions, even on important subjects, which I once thought right but found to be otherwise.
When you're finished changing, you're finished.
Whoever shall introduce into public affairs the principles of primitive Christianity will change the face of the world.
When you are finished changing, you are finished.
The way to be safe is never to be secure.
I should have no objection to go over the same life from its beginning to the end: requesting only the advantage authors have, of correcting in a second edition the faults of the first.
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