The singular multiplicity of this universe draws my deepest attention. It is a thing of ultimate beauty. Leto II - Frank Herbert

The scarce water of Dune is an exact analog of oil scarcity. CHOAM is OPEC.

When your opponent fears you, then’s the moment when you give the fear its own rein, give it the time to work on him. Let it become terror. The terrified man fights himself. Eventually, he attacks in desperation. That is the most dangerous moment, but the terrified man can be trusted usually to make a fatal mistake. You are being trained here to detect these mistakes and use them.

A person cries out against life because it's lonely, and because life's broken off from whatever created it. But no matter how much you hate life, you love it, too. It's like a caldron boiling with everything you have to have — but very painful to the lips.