This wise man observed that wealth is a tool of freedom. But the pursuit of wealth is the way to slavery.

I live in an apocalyptic dream. My steps fit into it so precisely that I fear most of all I will grow bored reliving the thing so exactly.

Madness in method, that's genius

Absolute power does not corrupt absolutely, absolute power attracts the corruptible.

The power to destroy a thing is the absolute control over it.

Leto turned a hard stare at Kynes. And Kynes, returning the stare, found himself troubled by a fact he had observed here: This Duke was concerned more over the men than he was over the spice. He risked his own life, and that of his son to save the men. He passed off the loss of a spice crawler with a gesture. The threat to men's lives had him in a rage. A leader such as that would command fanatic loyalty. He would be difficult to defeat. Against his own will and all previous judgements, Kynes admitted to himself: I like this Duke.

A killer with the manners of a rabbit - this is the most dangerous kind.