Conquests will come and go but Delambre's work will endure.

It must be recognized that the real truths of history are hard to discover. Happily, for the most part, they are rather matters of curiosity than of real importance.

There is no such thing as an accident, only a failure to recognise the hand of fate

When your enemy is doing something wrong, do not interrupt him.

For my part, it is not the mystery of the incarnation which I discover in religion, but the mystery of social order, which associates with heaven that idea of equality which prevents the rich from destroying the poor

Never interrupt your enemy when he is making a mistake.

One should never forbid what one lacks the power to prevent.