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Concept in metaphysics

The phrase "the best of all possible worlds" (French: Le meilleur des mondes possibles; German: Die beste aller möglichen Welten) was coined by the Germanpolymath and Enlightenment philosopherGottfried Leibniz in his 1710 work Essais de Théodicée sur la bonté de Dieu, la liberté de l'homme et l'origine du mal (Essays of Theodicy on the Goodness of God, the Freedom of Man and the Origin of Evil),^[1] more commonly known simply as the Theodicy. The claim that the actual world is the best of all possible worlds is the central argument in Leibniz's theodicy, or his attempt to solve the problem of evil.^[1]

Leibniz

In Leibniz's works, the argument about the best of all possible worlds appears in the context of his theodicy, a word that he coined by combining the Greek words Theos, 'God', and dikē, 'justice'.^[2] Its object was to solve the problem of evil, that is, to reconcile Friedrich leibniz philosophy!