Physics, Beware Of Metaphysics.

He Who Thinks Half-heartedly Will Not Believe In God; But He Who Really Thinks Has To Believe In God.

Through Algebra You Easily Arrive At Equations, But Always To Pass Therefrom To The Elegant Constructions And Demonstrations Which Usually Result By Means Of The Method Of Porisms Is Not So Easy, Nor Is One's Ingenuity And Power Of Invention So Greatly Exercised And Refined In This Analysis.

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)

Thus This Earth Resembles A Great Animall Or Rather An Inanimate Vegetable, Draws In Aethereal Breath For Its Dayly Refreshment And Vitall Ferment And Transpires Again Grosses Exhalations. And, According To The Condition Of All Other Things Living, Ought To Have Its Time Of Beginning, Youth, Old Age And Perishing.

To Myself I Am Only A Child Playing On The Beach, While Vast Oceans Of Truth Lie Undiscovered Before Me