Every sentence I utter must be understood not as an affirmation, but as a question.

Let him be without suspicion who has done no wrong.

The child is not a passive recipient of knowledge but an active participant in the learning process.

"The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all. And that, of course, causes great confusion."