Isaac Newton was an English mathematician, physicist, astronomer, theologian, and author (often called "the father of modern physics") who is famous for his laws of motion and universal gravitation. Some key facts about him include: - He was born in 1643 in Lincolnshire, England and was not expected to survive as a premature baby. - As an adult, he built the first reflecting telescope and formulated the laws of motion and universal gravitation, making important contributions to optics, mathematics, and experimental scientific method. - Some interesting facts about Newton include that the story of an apple falling and inspiring his ideas on gravity is likely untrue, and that late in life he suffered mental health