What is there in places empty of matter? and Whence is it that the sun and planets gravitate toward one another without dense matter between them? Whence is it that Nature doth nothing in vain? and Whence arises all that order and beauty which we see in the world? To what end are comets? and Whence is it that planets move all one and the same way in orbs concentrick, while comets move all manner of ways in orbs very excentrick? and What hinders the fixed stars from falling upon one another?

Hypotheses non fingo.

The changing of bodies into light, and light into bodies, is very conformable to the course of Nature, which seems delighted with transmutations.

To every action there is always opposed an equal reaction; or, the mutual actions of two bodies upon each other are always equal, and directed to contrary part…

Whence do you have it that the terrestrial globe is so heavy? For my part, either I do not know what heaviness is, or the terrestrial globe is neither heavy no…

The next question was - what makes planets go around the sun? At the time of Kepler some people answered this problem by saying that there were angels behind t…

This ascent will be betrayed to Gravity. But the Rocket engine, the deep cry of combustion that jars the soul, promises escape. The victim, in bondage to falli…