By this we may understand, there be two sorts of knowledge, whereof the one is nothing else but sense, or knowledge original (as I have said at the beginning of the second chapter), and remembrance of the same; the other is called science or knowledge of the truth of propositions, and how things are called, and is derived from understanding.

If men are naturally in a state of war, why do they always carry arms and why do they have keys to lock their doors?

He that is taken and put into prison or chains is not conquered, though overcome; for he is still an enemy.

When all the world is overcharged with inhabitants, then the last remedy of all is war, which provideth for every man, by victory or death.

As, in Sense, that which is really within us, is (as I have said before) only Motion, caused by the action of external objects, but in appearance; to the Sight, Light and Color; to the Ear, Sound; to the Nostril, Odor, &c.

Nature itself cannot err

Curiosity draws a man from consideration of the effect, to seek the cause.