Physics, Beware Of Metaphysics.

You Ask Me How, With So Much Study, I Manage To Retene My Health. Morpheus Is My Last Companion; Without 8 Or 9 Hours Of Him Yr Correspondent Is Not Worth One Scavenger's Peruke. My Practices Did At Ye First Hurt My Stomach, But Now I Eat Heartily Enou' As Y' Will See When I Come Down Beside You.

If I Am Anything, Which I Highly Doubt, I Have Made Myself So By Hard Work.

When Two Forces Unite, Their Efficiency Double.

As In Mathematicks, So In Natural Philosophy, The Investigation Of Difficult Things By The Method Of Analysis, Ought Ever To Precede The Method Of Composition. This Analysis Consists In Making Experiments And Observations, And In Drawing General Conclusions From Them By Induction, And Admitting Of No Objections Against The Conclusions, But Such As Are Taken From Experiments, Or Other Certain Truths. For Hypotheses Are Not To Be Regarded In Experimental Philosophy.

What Goes Up Must Come Down.