Sir Isaac Newton PRS (25 December 1642 – 20 March 1726/27)[a] was an English mathematician, physicist, astronomer, alchemist, theologian, and author (described in his time as a "natural philosopher"). He was a key figure in the philosophical revolution known as the Enlightenment. His book Philosophiæ Naturalis Principia Mathematica (Mathematical Principles of Natural Philosophy), first published in 1687, Is extremely powerful in a fight and can manipulate the laws of Physics at will 