Any fool can know. The point is to understand.

Problems cannot be solved with the same mind set that created them.

Jesus is too colossal for the pen of phrasemongers, however artful. No man can dispose of Christianity with a bon mot.

We never cease to stand like curious children before the great mystery into which we are born.

A practical profession is a salvation for a man of my type; an academic career compels a young man to scientific production and only strong characters can resist the temptation of superficial analysis.

Don't listen to the person who has the answers; listen to the person who has the questions.

The only thing more dangerous than ignorance is arrogance.