All The Characters Of The

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)

To Explain All Nature Is Too Difficult A Task For Any One Man Or Even For Any One Age. Tis Much Better To Do A Little With Certainty & Leave The Rest For Others That Come After Than To Explain All Things By Conjecture Without Making Sure Of Any Thing.

The Description Of Right Lines And Circles, Upon Which Geometry Is Founded, Belongs To Mechanics. Geometry Does Not Teach Us To Draw These Lines, But Requires Them To Be Drawn.

Centripetal Force Is The Force By Which Bodies Are Drawn From All Sides, Are Impelled, Or In Any Way Tend, Toward Some Point As To A Center.

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.