Even an Emperor may tremble before Muad’Dib, for he has the strength of righteousness and heaven smiles upon him. - Frank Herbert

"The problem of leadership is inevitably: Who will play God?"
Muad'Dib

Paul shrugged. “Then she said a good ruler has to learn his world’s language, that it’s different for every world. And I thought she meant they didn’t speak Galach on Arrakis, but she said that wasn’t it at all. She said she meant the language of the rocks and growing things, the language you don’t hear just with your ears. And I said that’s what Dr. Yueh calls the Mystery of Life.” Hawat chuckled. “How’d that sit with her?” “I think she got mad. She said the mystery of life isn’t a problem to solve, but a reality to experience.

"When a Truthsayer's gifted by the drug, she can look many places in her memory - in her body's memory. We look down so many avenues of the past... but only feminine avenues... Yet there's a place no Truthsayer can see. We are repelled by it, terrorized. It is said a man will come one day and find in the gift of the drug his inward eye. He will look where we cannot - into both feminine and masculine pasts... Many men have tried the drug... so many, but none has succeeded."

"They tried and failed, all of them?"

"They tried and died."