Clayton's

“The receptivity of the masses is very limited, their intelligence is small, but their power of forgetting is enormous. In consequence of these facts, all effective propaganda must be limited to a very few points and must harp on these in slogans until the last member of the public understands what you want him to understand by your slogan.”
― Adolf Hitler

“The great strength of the totalitarian state is that it forces those who fear it to imitate it.”
― Adolf Hitler

“The very first essential for success is a perpetually constant and regular employment of violence.”
― Adolf Hitler

“Kill, Destroy, Sack, Tell lie; how much you want after victory nobody asks why?

-- uncited source”
― Adolf Hitler