K-PAX

"I shall miss Earth, it has great potential."

"Let me tell you something, Mark. You humans, most of you, subscribe to this policy of an eye for an eye, a life for a life, which is known throughout the universe for its... stupidity. Even your Buddha and your Christ had quite a different vision, but nobody's paid much attention to them, not even the Buddhists or the Christians. You humans... sometimes its hard to imagine how you've made it this far."

Dr. Mark Powell: "How do you know right from wrong?"
Prot: "Every being in the universe knows right from wrong, Mark."

"I wanna tell you something Mark, something you do not yet know, that we K-PAXians have been around long enough to have discovered. The universe will expand, then it will collapse back on itself, then will expand again. It will repeat this process forever. What you don't you know is that when the universe expands again, everything will be as it is now. Whatever mistakes you make this time around, you will live through on your next pass. Every mistake you make, you will live through again and again, forever. So my advice to you is to get it right this time around. Because this time is all you have."