I hear and I forget. I see and I remember. I do and I understand.

The only thing that interferes with my learning is my education.

Nationalism is an infantile sickness. It is the measles of the human race.

Teaching should be such that what is offered is perceived as a valuable gift and not as a hard duty.

Before you speak, ask yourself: Is it kind, is it necessary, is it true, does it improve on the silence?