All that stock of arguments [the skeptics] produce to depreciate our faculties, and make mankind appear ignorant and low, are drawn principally from this head, to wit, that we are under an invincible blindness as to the true and real nature of things.

The method of Fluxions is the general key by help whereof the modern mathematicians unlock the secrets of Geometry, and consequently of Nature.

Few men think, yet all will have opinions.

Westward the course of empire takes its way; The four first acts already past, A fifth shall close the drama with the day: Time's noblest offspring is the last.

Certainly he who can digest a second or third fluxion need not, methinks, be squeamish about any point in divinity.

This perceiving, active being is what I call mind, spirit, soul, or myself. By which words I do not denote any one of my ideas, but a thing entirely distinct from them, wherein they exist, or, which is the same thing, whereby they are perceived; for the existence of an idea consists in being perceived.

Others indeed may talk, and write, and fight about liberty, and make an outward pretence to it but the free-thinker alone is truly free.