Timeline #1 1658: English mathematician Isaac Newton publishes the Philosophiæ Naturalis Principia Mathematica, otherwise known as the Principia. In it, he outlines the laws of motion, his theory of universal gravitation, and a derivation of Kepler’s laws. Without any of this, we could not even contemplate space travel. It is quite difficult to overstate what a pivotal moment this played in history.
The Hunger Games Good Book :D