...from the same principles, I now demonstrate the frame of the System of the World.

You sometimes speak of gravity as essential and inherent to matter. Pray do not ascribe that notion to me, for the cause of gravity is what I do not pretend to know, and therefore would take more time to consider of it.

If I have done the public any service, it is due to my patient thought.

Are not all Hypotheses erroneous, in which Light is supposed to consist in Pression or Motion, propagated through a fluid Medium? For in all these Hypotheses the Phaenomena of Light have been hitherto explain'd by supposing that they arise from new Modifications of the Rays; which is an erroneous Supposition.

To arrive at the simplest truth requires years of contemplation.

What goes up must come down.

To me there has never been a higher source of earthly honor or distinction than that connected with advances in science.