Nature … is, as it were, a continual circulation. Water is rais'd in Vapour into the Air by one Quality and precipitated down in drops by another, the Rivers run into the Sea, and the Sea again supplies them.

The truth is, the Science of Nature has been already too long made only a work of the Brain and the Fancy: It is now high time that it should return to the plainness and soundness of Observations on material and obvious things.

The business and design of the Royal Society is: To improve the knowledge of naturall things, and all useful Arts, Manufactures, Mechanic practices, Engines and Inventions by Experiments-(not meddling with Divinity, Metaphysics, Moralls, Politicks, Grammar, Rhetoric or Logick).

The footsteps of Nature are to be trac'd, not only in her ordinary course, but when she seems to be put to her shifts, to make many doublings and turnings, and to use some kind of art in endeavouring to avoid our discovery.

Not meddling with Divinity, Metaphysicks, Moralls, Politicks, Grammar, Rhetorick, or Logick.

By the help of microscopes, there is nothing so small, as to escape our inquiry; hence there is a new visible world discovered to the understanding.

Nature … is, as it were, a continual circulation. Water is rais'd in Vapour into the Air by one Quality and precipitated down in drops by another, the Rivers run into the Sea, and the Sea again supplies them.