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Marin Mersenne was a Catholic philosopher, mathematician, theologian, and music theorist. He was born in 1588 in Provence, France. He was a member of the Minim order of the Catholic Church, and he became a priest in 1613. Mersenne was a prolific writer, and he published over 50 books and pamphlets on a wide range of topics, including mathematics, physics, philosophy, and theology.