Tomorrow is a very special day for both my students and I: we will be starting a calculus course. I'm looking for some nice quotes to read to them to convey just what a complete game changer calculus was. I've done a quick Google search, but nothing acceptable comes up.
I don't want anything too old fashioned, or too stuffy. Can anyone recommend anything to help me inspire a new generation of blossoming mathematicians?
Edit: I'm specifically interested in quotes that mention calculus by name, and that mention its impact upon mathematics.