He passed off the loss of a spice crawler with a gesture. The threat to men’s lives had him in a rage. A leader such as that would command fanatic lo… - Frank Herbert

You do not take from this universe, he thought. It grants what it will.

Whirling silence settled around Jessica. Every fiber of her body accepted the fact that something profound had happened to it. She felt that she was a conscious mote, smaller than any subatomic particle, yet capable of motion and of sensing her surroundings. Like an abrupt revelation — the curtains whipped away — she realized she had become aware of a psychokinesthetic extension of herself. She was the mote, yet not the mote.

We can say that Muad'Dib learned rapidly because his first training was in how to learn. And the first lesson of all was the basic trust that he could learn.