“Whether a thought is spoken or not it is a real thing and it has power," Tuek said. "You might find the line between life and death among the Fremen to be too sharp and quick.”

“The real question is not whether life exists after death. The real question is whether you are alive before death.”

“It is supposed that power corrupts," the caterpillar said in a voice as untroubled as time itself. "Yet the powerful are often corrupt before they are powerful. In fact, I find that they too often become powerful by being corrupt. Whether real or perceived, a lack of power can also corrupt.”

“She’s been reading too much, he thought -had drifted across that line that separated what you might find in a book from what you might do”

“Who hears the wishes and goodbyes? The speaker does.... And you hope that what you say from the heart has power. Power to protect, power to reach the ears of the dead. A spoken thing or a whished-hard thing takes a shape within the heart, man. Takes shape. Becomes real.”

“Between childhood, boyhood, adolescence and manhood (maturity) there should be sharp lines drawn with tests, deaths, feats, rites, stories, songs, and judgments.”