Quotes: Your Mind Makes It Real

Neo: I thought it wasn't real.
Morpheus: Your mind makes it real.
Neo: If you're killed in the Matrix, you die here?
Morpheus: The body cannot live without the mind.

If you die in your sleep while playing his game, you die. If you die in his game itself, you die. If you eat a turkey leg in the game, you get full in real life.

"It was only an illusion, but the more you believed in it... the more real it became."

Tores: But none of this is real!
The Clown: Of course it's real, it's as real as a nightmare.
Kim: The two we found dead, both suffered from massive heart attacks.
The Clown: Heart attack? Now what might cause a heart attack? Hmm...unmanageable stress, perhaps? Unmanageable FEAR? Fear of losing a head, perhaps?
Star Trek: Voyager, "The Thaw"

Grif: Whoa, wait a second, does this hologram jeep fire hologram slugs, or real slugs?
Sarge: As long as we're in this room everything will seem real to us. It's all simulated, but your mind makes it real.
Simmons: Ooh, like The Matrix.
Lopez: (In Spanish) Right. But without all the Eastern philosophy stuff that no one understands.

Darth Andeddu: What you believe to be real is what is real! Even your own death!

(Hierophant Green has Death 13 on the ropes.)
Kakyoin: Alright, Death 13. I wouldn't mind unleashing a Bigbang: Melon inside of you, but I wouldn't be opposed to you just surrendering.
Death 13: I surrender! What do I have to do?!
(Kakyoin displays the arm with the bloody "Baby Stand" tattoo.)
Kakyoin: First, on my arm, this baby stand. I want you to erase this. Since, this is the Dream World, you can do it, can't you?
Death 13: I got it! Rally rally ho!
(Death 13 removes it.)
Kakyoin: Okay, it's gone. Now when we get out of this dream, I want you to leave my memory intact. I want you erase their memories like normal.
Death 13: I got it! I got it!
Kakyoin: Then I want my favorite Anime heroine to...
Death 13: I got it! I got it!

(While falling off a cliff in a virtual dream)
Marge: Relax. Everyone knows that if you die in a dream you just wake up.
Professor Frink: Oh, actually because I neglected to install the latest Adobe Acrobat update if you die in the dream you die in real life. Incidentally, I've also proven that hell is real and everyone goes there.