François-Marie Arouet, known by his nom de plume Voltaire, was an eminent French Enlightenment writer, historian, and philosopher known for his wit, his criticism of Christianity, especially the Roman Catholic Church, as well as his advocacy of freedom of speech, freedom of religion, and separation of church and state. Voltaire was born on November 21, 1694, in Paris, France, and became one of the most prolific writers of the eighteenth century, engaging in an estimated 20,000 letters and more than 2,000 books and pamphlets. He was a versatile and an influential figure whose works ranged from plays, poems, novels, essays, and historical and scientific works to polemics and over 21,000 letters. Voltaire's 'The Fourth Book of Virgil's Aeneid and the Ninth Book of Voltaire's Henriad' is among the numerous writings that exemplify his literary prowess. His propensity for sharp satire is evident in the 'Henriad,' an epic poem written in honor of King Henry IV of France and a clear manifestation of the writer's celebration of enlightened monarchy and rational religion. His literary style was characterized by its wit, irony, and keen intelligence, which he used to critique contemporary social and political orthodoxies. Voltaire's influence extends far beyond his lifetime into the modern era, and his works continue to be studied for their historical significance, philosophical content, and sheer brilliance of language.