This dude here Did many things
And invented
Cartesian coordinate system
Awesome
If you want to know more about him.
Let me google him for you:
https://www.google.nl/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=ren%C3%A9%20descartes
If you didn't think
the Cartesian coordinate system is awesome,
You should.
In short, the system bridges the algebra and geometry.
It visualized the algebra and symbolized the space,
made the two great fields of math be able to talk to each other.