" Do you know what guerrillas often say? They claim that their rebellions are invulnerable to economic warfare because they have no economy, that they are parasitic on those they would overthrow. The fools merely fail to access the coin in which they must inevitably pay. The pattern is inexorable in its degenerative failures. You see it repeated in the systems of slavery, of welfare states, of caste-ridden religions, of socializing bureaucracies -- in any system in which creates and maintains dependencies. Too long a parasite and you cannot exist without a host. "

― Frank Herbert , God Emperor of Dune (Dune, #4)