"If someone always finds our mistakes then we must be happy to know that there, in the world, is at-least someone who is concentrating his mind and spending his time to make us flawless or perfect."

"The fiendlike skill we display in the invention of all manner of death-dealing engines, the vindictiveness with which we carry on our wars, and the misery and desolation that follow in their train, are enough of themselves to distinguish the white civilized man as the most ferocious animal on the face of the earth."

"I know now that I can make it through more than I thought, with less than I thought. I know better than to believe that the changes are over, and I know better than to believe the next ones will be easier, but I've learned the hard way that change is one of God's greatest gifts and one of his most useful tools."

"Or rather, he was sad because that morning he'd understood that he'd understood nothing, because while he still understood nothing he wasn't sad at all, but now that he'd understood that he'd understood nothing he felt sad, if you follow."

"The Fremen were supreme in that quality the ancients called 'spannungsbogen' -- which is the self-imposed delay between desire for a thing and the act of reaching out to grasp that thing."

"The moon is considered a relatively easy object to land humans on, everything else is much harder by orders of magnitude. It is the reason why we have not been to Mars and will likely never go there successfully with humans."