Oh Diamond! Diamond! thou little knowest the mischief done! [Apocryphal]

You have to make the rules, not follow them

A cylinder of air reaching to the top of the atmosphere is of equal weight with a cylinder of water about 33 feet high.

The Synthesis consists in assuming the Causes discovered and established as Principles, and by them explaining the Phænomena proceeding from them, and proving the Explanations.

Gravity explains the motions of the planets, but it cannot explain who sets the planets in motion.

I consider my greatest accomplishment to be lifelong celibacy.

The qualities of bodies, which admit neither intension nor remission of degrees, and which are found to belong to fill bodies within the reach of our experiments, are to be esteemed the universal qualities of all bodies whatsoever.