Repetition is the mother of education.

Education has become a prisoner of contemporaneity. It is the past, not the dizzy present, that is the best door to the future.

The desire of knowledge, like the thirst of riches, increases ever with the acquisition of it.

Knowledge is an ancient error reflecting on its youth. 

The ceaseless, senseless demand for original scholarship in a number of fields, where only erudition is now possible, has led either to sheer irrelevancy, the famous knowing of more and more about less and less, or to the development of a pseudo-scholarship which actually destroys its object.

All that we know is nothing can be known. 

Human history becomes more and more a race between education and catastrophe.

A whale ship was my Yale College and my Harvard.

Rewards and punishment are the lowest form of education.

Real education must ultimately be limited to men who insist on knowing—the rest is mere sheep herding.

If the heavens were all parchment, and the trees of the forest all pens, and every human being were a scribe, it would still be impossible to record all that I have learned from my teachers.

A school without grades must have been concocted by someone who was drunk on nonalcoholic wine.

That which is evil is soon learned.