Doubt is not a pleasant condition, but certainty is an absurd one.

[Le doute n’est pas une condition agréable, mais la certitude est absurde.]

Voltaire (1694-1778) French writer [pseud. of Francois-Marie Arouet]

Letter to Frederick William, Prince of Prussia (28 Nov 1770) [tr. Tallentyre (1919)]
    (Source)

Alt trans.

• "Doubt is not a pleasant condition, but certainty is absurd."
• "Doubt is not an agreeable condition, but certainty is an absurd one."
• "Doubt is not a very agreeable state, but certainty is a ridiculous one."