If by gaining knowledge we destroy our health, we labour for a thing that will be useless in our hands.

A young man before he leaves the shelter of his father's house, and the guard of a tutor, should be fortify'd with resolution, and made acquainted with men, to secure his virtues, lest he should be led into some ruinous course, or fatal precipice, before he is sufficiently acquainted with the dangers of conversation, and his steadiness enough not to yield to every temptation.

How long have you been holding those words in your head, hoping to use them?

He that has his chains knocked off, and the prison doors set open to him, is perfectly at liberty, because he may either go or stay, as he best likes; though his preference be determined to stay, by the darkness of the night, or illness of the weather, or want of other lodging.

If, then, there must be something eternal, let us see what sort of Being it must be. And to that it is very obvious to Reason, that it must necessarily be a cogitative Being. For it is as impossible to conceive that ever bare incogitative Matter should produce a thinking intelligent Being, as that nothing should of itself produce Matter.

The business of education is not to make the young perfect in any one of the sciences, but so to open and dispose their minds as may best make them - capable of any, when they shall apply themselves to it.

He that will make good use of any part of his life must allow a large part of it to recreation.