François-Marie Arouet was a French Enlightenment writer, philosopher and historian. Known by his nom de plume M. de Voltaire, he was famous for his wit, in addition to his criticism of Christianity—especially of the Roman Catholic Church—and of slavery. Voltaire was an advocate of freedom of speech, freedom of religion and separation of church and state.
His best-known work and magnum opus, Candide, is a novella which comments on, criticizes and ridicules many events, thinkers and philosophies of his time, most notably Gottfried Leibniz and his belief that our world is the "best of all possible worlds".

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