The assumption that humans exist within an essentially impermanent universe, taken as an operational precept, demands that the intellect become a tot… - Frank Herbert

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.

This group is composed of those for whom belief in saucers is tantamount to religion...They believe men from outer space will step in on Earth "before it's too late," put a stop to the atomic bomb threat "by their superior powers," and enforce perpetual peace "for the good of the universe"...

Je ne connaîtrai pas la peur car la peur tue l'esprit. La peur est la petite mort qui conduit à l'oblitération totale. J'affronterai ma peur. Je lui permettrai de passer sur moi, au travers de moi. Et lorsqu'elle sera passée, je tournerai mon œil intérieur sur son chemin. Et là où elle sera passée, il n'y aura plus rien. Rien que moi.