Covenants without swords are but words.

There is more in Mersenne than in all the universities together.

They that approve a private opinion, call it opinion; but they that dislike it, heresy; and yet heresy signifies no more than private opinion.

That wee have of Geometry, which is the mother of all Naturall Science, wee are not indebted for it to the Schools.

Opinion of ghosts, ignorance of second causes, devotion to what men fear, and talking of things casual for prognostics, consisteth the natural seeds of religion

Life in the state of nature is solitary, poor, nasty, brutish, and short.

A free man is he that, in those things which by his strength and wit he is able to do, is not hindered to do what he has a will to.