You Have To Make The Rules, Not

The Changing Of Bodies Into Light, And Light Into Bodies, Is Very Conformable To The Course Of Nature, Which Seems Delighted With Transmutations.

Gravity Explains The Motions Of The Planets, But It Cannot Explain Who Sets The Planets In Motion.

I Can Measure The Motion Of Bodies But I Cannot Measure Human Folly.

This Principle Of Nature Being Very Remote From The Conceptions Of Philosophers, I Forbore To Describe It In That Book, Least I Should Be Accounted An Extravagant Freak And So Prejudice My Readers Against All Those Things Which Were The Main Designe Of The Book.

I Have Presented Principles Of Philosophy That Are Not, However, Philosophical But Strictly Mathematical-that Is, Those On Which The Study Of Philosophy Can Be Based. These Principles Are The Laws And Conditions Of Motions And Of Forces, Which Especially Relate To Philosophy.