This is a French satire first published in 1759 by Voltaire, a philosopher of the Age of Enlightenment. The novella has been widely translated, with English versions titled Candide: or, All for the Best (1759); Candide: or, The Optimist (1762); and Candide: or, Optimism (1947).

It begins with a young man, Candide, who is living a sheltered life in an Edenic paradise and being indoctrinated with Leibnizian optimism (or simply Optimism) by his mentor, Pangloss. The work describes the abrupt cessation of this lifestyle, followed by Candide's slow, painful disillusionment as he witnesses and experiences great hardships in the world. Voltaire concludes with Candide, if not rejecting optimism outright, advocating an enigmatic precept, "we must cultivate our garden", in lieu of the Leibnizian mantra of Pangloss, "all is for the best in the best of all possible worlds".