Muad'Dib tells us in "A Time of Reflection" that his first collisions with Arrakeen necessities were the true beginnings of his education. He learned then how to pole the sand for its weather, learned the language of the wind's needles stinging his skin, learned how the nose can buzz with sand-itch and how to gather his body's precious moisture around him to guard it and preserve it. As his eyes assumed the blue of the Ibad, he learned the Chakobsa way.
There exists a limit to the force even the most powerful may apply without destroying themselves. Judging this limit is the true artistry of government. Misuse of power is the fatal sin. The law cannot be a tool of vengeance, never a hostage, nor a fortification against the martyrs it has created. You cannot threaten any individual and escape the consequences.
"You do not beg the sun for mercy."
The advent of the Field Process shield and the lasgun with their explosive interaction, deadly to attacker and attacked, placed the current determinatives, on weapons technology. We need not go into the special role of atomics. The fact that any Family in my Empire could so deploy its atomics as to destroy the planetary bases of fifty or more other Families causes some nervousness, true. But all of us possess precautionary plans for devastating retaliation. Guild and Landsraad contain the keys which hold this force in check, No, my concern goes to the development of humans as special weapons. Here is a virtually unlimited field which a few powers are developing.
I saw his blood and a piece of his robe which had been ripped by sharp claws. His sister reports vividly of the tigers, the sureness of their attack. We have questioned one of the plotters, and others are dead or in custody. Everything points to a Corrino plot. A Truthsayer has attested to this testimony.
A Fremen dies when he is too long from the desert; this we call "the water sickness."