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.

Therefore to the same natural effects we must, as far as possible, assign the same causes.

To myself I am only a child playing on the beach, while vast oceans of truth lie undiscovered before me

I can measure the motion of bodies but I cannot measure human folly.

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

The instinct of brutes and insects can be the effect of nothing else than the wisdom and skill of a powerful ever-living agent.

What Descartes did was a good step. You have added much several ways, and especially in taking the colours of thin plates into philosophical consideration. If I have seen a little further it is by standing on the shoulders of Giants.