The best is the enemy of the good.
'La Begueule', Contes (1772)
It is dangerous to be right in matters where established men are wrong.
Le Siecle de Louis XIV (1752)
Doubt is not a pleasant condition, but certainty is an absurd one.
Letter to Frederick William, Prince of Prussia (1770)
Let us cultivate our garden.
The secret of being a bore is to tell everything.
Sept Discours en Vers sur l'Homme (1738)
Love truth, but pardon error.
Sept Discours en Vers sur l'Homme (1738)
Man is free at the instant he wants to be.
Let us read, and let us dance; these two amusements will never do any harm to the world.
'Liberty of the Press', Dictionnaire philosophique