Sir Isaac Newton was born especially tiny but grew into a massive intellect and still looms large, thanks to his findings on gravity, light, motion, mathematics, and more. Isaac Newton lived not only as a scientist but as a philosopher, theologian, mathematician, astronomer, alchemist, and seeker of truth. He was a bridge between the medieval and modern worlds, between faith and reason, between the known and the unknowable. Isaac Newton was an English physicist and mathematician famous for his laws of physics. He was a key figure in the Scientific Revolution of the 17th century. Newton was a fellow of Trinity College and the second Lucasian Professor of Mathematics at the University of Cambridge; he was appointed at the age of 26. He was a devout but unorthodox Christian who privately rejected the doctrine of the Trinity.