Jean Dubreuil, also known as Jean Du Breuil (22 July 1602 – 27 April 1670), was a French mathematician, music theorist, writer and essayist. Life Son of the bookseller Claude Du Breuil, he continued his father's profession until he joined the Society of Jesus. He lived for a long time in Rome where he studied architecture. He is known for his work about the theory and practice of perspective. Works La perspective practique, 1642–1649 L'Art universel des fortifications References French mathematicians 1602 births 1670 deaths French essayists French writers