The only thing we are naturally afraid of is pain, or loss of pleasure. And because these are not annexed to any shape, colour, or size of visible objects, we are frighted of none of them, till either we have felt pain from them, or have notions put into us that they will do us harm.

Knowledge is grateful to the understanding, as light to the eyes.

Let not men think there is no truth, but in the sciences that they study, or the books that they read.

Children have as much mind to show that they are free, that their own good actions come from themselves, that they are absolute and independent, as any of the proudest of you grown men, think of them as you please.

There is not so contemptible a plant or animal that does not confound the most enlarged understanding.

The chief art of learning is to attempt but a little at a time.

The state of nature has a law of nature to govern it, which obliges every one: and reason, which is that law, teaches all mankind, who will but consult it.