Education is a weapon whose effects depend on who holds it in his hands and at whom it is aimed.

Rewards and punishment are the lowest form 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.

Repetition is the mother of education.

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

Knowledge is an ancient error reflecting on its youth. 

All that we know is nothing can be known. 

It is not light that we need, but fire; it is not the gentle shower, but thunder. We need the storm, the whirlwind, and the earthquake.

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

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.

What harm is there in getting knowledge and learning, were it from a sot, a pot, a fool, a winter mitten, or an old slipper? 

The period of a [Persian] boy’s education is between the ages of five and twenty, and he is taught three things only: to ride, to use the bow, and to speak the truth.

That which is evil is soon learned.