When the adversaries of Erasmus had got the Trinity into his edition, they threw by their manuscript as an old almanac out of date.

By such deductions the law of gravitation is rendered probable, that every particle attracts every other particle with a force which varies inversely as the square of the distance. The law thus suggested is assumed to be universally true.

What goes up must come down.

Gravity explains the motions of the planets, but it cannot explain who sets the planets in motion.

Trials are medicines which our gracious and wise Physician prescribes because we need them; and he proportions the frequency and weight of them to what the case requires. Let us trust his skill and thank him for his prescription.

As a blind man has no idea of colors, so we have no idea of the manner by which the all-wise God perceives and understands all things.

The description of right lines and circles, upon which geometry is founded, belongs to mechanics. Geometry does not teach us to draw these lines, but requires them to be drawn.