"Patients do not escape from this institution. They don't escape. I'm going to have a great time explaining this to the state board. I've got psychotics on the fourth floor packing up their sneakers because they all think they're going off to K-PAX. Find him."

"prot told me to find the Bluebird of Happiness… Its a task. The first of three."

"I put up with the stink in this place for ten years. I want to get out, if you know what I mean. I used to be the doorman at The Plaza — fif-fifteen years — that's when I started to notice it… The smell. They all stank. I, I tried to tell them, but, uh… they put me here. And um, this, this place smells worse than all — except for you. You, you don't smell. So I figured you could help me."

"Wow. He looks like Data."

"After one month, his amnesia and his delusion has persisted. He claims to be not human. A visitor from another planet."

"There it is. Robert Porter. Drowned. His name is Robert Porter."

"Tell me… uh, do you know of any missing astro-physicists?"

"He's the most convincing delusional I've ever come across."

"Let's hope extra-terrestrials qualify for Medicaid."

"Who is it this time? Jesus Christ or Joan of Arc?"

"You humans. Sometimes it's hard to imagine how you've made it this far."

"I want to tell you something Mark, something you do not yet know, but we K-Paxians have been around long enough to have discovered. The universe will expand, and it will collapse back on itself, then will expand again. It will repeat this process forever. What you don't 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."

"Reality is what you make of it."

"Now that you've found Robert. Please take good care of him."

"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."

"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."

"There's enough life on earth to fill fifty planets… plants, animals, people, fungi, viruses… all jostling to find their place. Bouncing off each other, feeding off each other… connected."

"I travel light. That's a joke, Mark. You humans — there's just no sense of humor."

"Time is running out for everyone."

"Something happened. That's why he called me. He calls me when something bad happens."

"I would say you're in need of a Thorazine drip, Doctor."

"She says she doesn't like it when you hide her favorite tennis shoe, and she doesn't hear too well on her left side, so don't sneak up on her anymore."

"I take it my calculations help explain the perturbations you've been seeing in the rotation pattern of your binary star, but have been unable to explain until… this moment."

"You'd be surprised how much energy is in a beam of light."

"Doctor — Doctor — Doctor — Doctor. Tell me how many doctors are there on this planet?"

"For your information: All beings have the capacity to cure themselves, Mark. This is something we've known on K-PAX for millions of years."

"Doctor. Patient. Interesting human distinction."

"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."

"Every being in the universe knows right from wrong, Mark."

"Your produce alone has been worth the trip."

"Why is a soap bubble round? Because it is the most energy efficient configuration. Similarly, on your planet I look like you; on K-PAX I look like a K-Paxian."

"You know, for an educated person Mark, you repeat things quite a bit. Are you aware of that?"

"What Einstein actually said was that nothing can accelerate to the speed of light because its mass would become infinite. Einstein said nothing about entities already traveling at the speed of light or faster."

"I'm an alien. Don't worry, I'm not going to leap out of your chest."

"I didn't arrive by train."

"I have arrived. My travels are over for the time being."

"He Saw the World in a Way No One Could Have Imagined."

"Stockard Channing - E.R. Nurse"

"Frances Sternhagen - Mrs. Sally Cushing"

"David Hooks - Dr. Joe Einhorn"

"Katherine Helmond - Mrs. Marilyn Mead"

"Kate Harrington - Nurse Dunne"

"Arthur Junaluska - Mr. Blacktree"

"Richard Hamilton - Dr. Ronald Casey"

"Lenny Baker - Dr. Howard Schaefer"

"Roberts Blossom - Guernsey"

"Jordan Charney - Hitchcock, Hospital Administration"

"Nancy Marchand - Mrs. Christie, Head of Nurses"

"Donald Harron - Dr. Milton Mead"