Inception

"What is the most resilient parasite?  Bacteria, a virus, intestinal worm... An idea, resilient, highly contagious, once an idea has taken hold of the brain it is almost impossible to eradicate, an idea that is fully formed, fully understood, that sticks."


"If you can steal an idea in someone's mind why can't you plant one instead?"
"Ok, here's me planting an idea in your head.  I say don't think about elephants, what do you think about?"
"Elephants."
"Right, but it's not your idea because you know I gave it to you. The subjects' mind can always trace the genesis of the idea. True inspiration is impossible to fake."