What goes up must come down.

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

Yet one thing secures us what ever betide, the scriptures assures us that the Lord will provide.

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.

Truth is ever to be found in the simplicity, and not in the multiplicity and confusion of things.

To derive two or three general Principles of Motion from Phænomena, and afterwards to tell us how the Properties and Actions of all corporeal Things follow from those manifest Principles, would be a very great step in Philosophy.

We are not to consider the world as the body of God: he is an uniform being, void of organs, members, or parts; and they are his creatures, subordinate to him, and subservient to his will.