Skepticism is a virtue in history as well as in philosophy.

Water, air, and cleanness are the chief articles in my pharmacy.

Imagination rules the world.

My dominion ends where that of conscience begins.

My decision to destroy the authority of the blacks in Saint Domingue (Haiti) is not so much based on considerations of commerce and money, as on the need to block for ever the march of the blacks in the world.

Medicine is a collection of uncertain prescriptions, the results of which, taken collectively, are more fatal than useful to mankind.

In war, as in prostitution, amateurs are often better than professionals.