Without coming fully awake, Rhin felt his presence beside her, experienced a primitive demand for his… — Frank Herbert

It wasn’t the kind of answer he'd expected — too subtly penetrating and leaving too much uncommitted. He reminded himself that it was difficult to control uncommitted people. Once a man had invested his energies, he could be twisted and turned at will... but if the man held back, conserved those energies...

"A slave is one who must produce wealth for another," the Brain said. "There is only one true wealth in all the universe. I have given you some of it. I have given your father and your mate some of it. And your friends. This wealth is living time. Time. Are we slaves because we have given you more time to live?"

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.