“When a wise man does not understand, he says: "I do not understand." The fool and the uncultured are ashamed of their ignorance. They remain silent when a question could bring them wisdom.”

“When he wanted, he could radiate charm and sincerity, but I often wonder in these later days if anything about him was as it seemed. I think now he was a man fighting constantly to escape the bars of an invisible cage.”

“There was a man so wise,He jumped intoA sandy placeAnd burnt out both his eyes!And when he knew his eyes were gone,He offered no complaint.He summoned up a visionAnd made himself a saint. -Children's Verse from History of Muad'dib”

“The beginning of knowledge is the discovery of something we do not understand.”

“You who have defeated us say to yourselves that Babylon is fallen and its works have been overturned. I say to you still that man remains on trial, each man in his own dock. Each man is a little war.”

“I must not fear. Fear is the mind-killer. Fear is the little-death that brings total obliteration. I will face my fear. I will permit it to pass over me and through me. And when it has gone past I will turn the inner eye to see its path. Where the fear has gone there will be nothing. Only I will remain.”

“Jessica stopped beside him: ‘What delicious abandon in the sleep of a child.’He spoke mechanically: ‘If only adults could relax like that.’ ‘Yes.’‘When do we lose it?’ He murmured…‘We do indeed lose something,’ she said.”