“Decent people are so easy to manipulate, Potter.”
“People worried about our passing over into some robotic state, but we were so much like robots already, programmed and easy to manipulate.”
“The decent, strong person had to do decent, strong things like love unlovable people and keep peace even when it wasn't easy.”
“Humans are pathetically greedy and easy to manipulate.”
“...this was depressing, much the way discovering that somebody is easy to manipulate is always a little depressing.”
“Merlin nodded gravely. “Doing what is right is nearly always simple, Mr. Potter. But it is never easy.”