Isaac Newton is best know for his theory about the law of gravity but his Principia Mathematica in 1686 with its three laws of motion greatly influenced the Enlightenment in Europe.
His laws helped many scientists to better understand gravity and how it works.Newton did many other things other than laws of gravity that changed the world.
Newton invented a branch of mathematics called calculus.He was able to expand the knowledge of math which helped people to figure more things out.