Every Action Has An Equal And Opposite

His Epitaph: Who, By Vigor Of Mind Almost Divine, The Motions And Figures Of The Planets, The Paths Of Comets, And The Tides Of The Seas First Demonstrated.

A Vulgar Mechanick Can Practice What He Has Been Taught Or Seen Done, But If He Is In An Error He Knows Not How To Find It Out And Correct It, And If You Put Him Out Of His Road He Is At A Stand. Whereas He That Is Able To Reason Nimbly And Judiciously About Figure, Force, And Motion, Is Never At Rest Till He Gets Over Every Rub. (from A Letter Dated 25 May, 1694)

I Do Not Define Time, Space, Place, And Motion, As Being Well Known To All. Only I Must Observe, That The Common People Conceive Those Quantities Under No Other Notions But From The Relation They Bear To Sensible Objects. And Thence Arise Certain Prejudices, For The Removing Of Which It Will Be Convenient To Distinguish Them Into Absolute And Relative, True And Apparent, Mathematical And Common.

Live Your Life As An Exclamation Rather Than An Explanation

My Design In This Book Is Not To Explain The Properties Of Light By Hypotheses, But To Propose And Prove Them By Reason And Experiments: In Order To Which, I Shall Premise The Following Definitions And Axioms.