Prot: You know what I've learned about your planet? There's enough life on Earth to fill 50 planets. Plants, animals, people, fungi, viruses, all jostling to find their place, bouncing off each other, feeding off each other. Connected.
Dr. Mark Powell: You don't have that kind of connection on K-PAX?
Prot: Nobody wants, nobody needs. On K-PAX, when I'm gone, nobody misses me. There would be no reason to. And yet I sense that when I leave here... I will be missed. Yes. Strange feeling.
Dr. Mark Powell: Oh, 6:15 was late. Didn't leave the station till 6:30. Should have caught the nearest beam of light.
Prot: I will admit the possibility that I am Robert Porter, if you will admit the possibility that I am from K-PAX. Now if you'll excuse me, I have a beam of light to catch.
Dr. Mark Powell: 26:16 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 has paid much attention to them, not even the Buddhists or the Christians. Sometimes, it's hard to imagine how you've made it this far.
Howie: You never gave me my third task. What's my third task?
Prot: To stay here, and be prepared for anything.