I Do Not Know What I May

Our Present Work Sets Forth Mathematical Principles Of Philosophy. For The Basic Problem Of Philosophy Seems To Be To Discover The Forces Of Nature From The Phenomena Of Motions And Then To Demonstrate The Other Phenomena From These Forces. It Is To These Ends That The General Propositions In Books 1 And 2 Are Directed, While In Book 3 Our Explanation Of The System Of The World Illustrates These Propositions.

A Good Watch May Serve To Keep A Recconing At Sea For Some Days And To Know The Time Of A Celestial Observ[at]ion: And For This End A Good Jewel Watch May Suffice Till A Better Sort Of Watch Can Be Found Out. But When The Longitude At Sea Is Once Lost, It Cannot Be Found Again By Any Watch.

By Such Deductions The Law Of Gravitation Is Rendered Probable, That Every Particle Attracts Every Other Particle With A Force Which Varies Inversely As The Square Of The Distance. The Law Thus Suggested Is Assumed To Be Universally True.

Sir Isaac Newton Was Asked How He Discovered The Law Of Gravity. He Replied, "by Thinking About It All The Time.

This Most Beautiful System Of The Sun, Planets And Comets, Could Only Proceed From The Counsel And Dominion Of An Intelligent And Powerful Being.