I feign no hypotheses.

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

Do not the Rays which differ in Refrangibility differ also in Flexibity; and are they not by their different Inflexions separated from one another, so as after separation to make the Colours in the three Fringes above described? And after what manner are they inflected to make those Fringes?

Sir Isaac Newton was asked how he discovered the law of gravity. He replied, "By thinking about it all the time.

He that in ye mine of knowledge deepest diggeth, hath, like every other miner, ye least breathing time, and must sometimes at least come to terr. alt. for air.

You have to make the rules, not follow them

All knowledge and understanding of the Universe was no more than playing with stones and shells on the seashore of the vast imponderable ocean of truth.