This most beautiful system of the sun, planets and comets, could only proceed from the counsel and dominion of an intelligent and powerful Being.

My Design in this Book is not to explain the Properties of Light by Hypotheses, but to propose and prove them by Reason and Experiments: In order to which, I shall premise the following Definitions and Axioms.

Impressed force is the action exerted on a body to change its state either of resting or of moving uniformly straight forward.

When the adversaries of Erasmus had got the Trinity into his edition, they threw by their manuscript as an old almanac out of date.

We account the Scriptures of God to be the most sublime philosophy.

Whence arises all that order and beauty we see in the world?

Godliness consists in the knowledge love & worship of God, Humanity in love, righteousness & good offices towards man.