Pinbacker: At the end of time, a moment will come when just one man remains. Then the moment will pass. Man will be gone. There will be nothing to show that we were ever here... But stardust.
Searle: Prescription, two hours in the Earth Room. And get a haircut.
Cassie: We have an excess of manliness in the comm center right now.
Pinbacker: I am Pinbacker, Commander of the Icarus One. We have abandoned our mission. Our star is dying. All our science. All our hopes, our... Our dreams, are foolish! In the face of this, we are dust, nothing more. Unto this dust, we return. When he chooses for us to die, it is not our place to challenge God.
Mace: Okay, that make sense to anyone?
Cassie: Only dream I ever have... Is it the surface of the sun? Every time I shut my eyes... It's always the same.
Pinbacker: Are you an angel? Has the time come? I've been waiting so long.
Capa: By the time you get this message, I'll be in the dead zone. It came a little sooner than we thought, but this means you won't be able to send a message back. So, I just wanted to let you know that I don't need the message because I know everything you wanna say. Just remember it takes eight minutes for light to travel from sun to Earth, which means you'll know we succeeded about eight minutes after we deliver the payload. All you have to is look out for a little extra brightness in the sky. So if you wake up one morning and it's a particularly beautiful day, you'll know we made it. Okay, I'm signing out and I'll see you in a couple years.
Answer: It is implied that Pinbacker's dedication to his mission to destroy humanity allows him to ignore his injuries. It must also be pointed out that Pinbacker was intentionally designed by director Danny Boyle to break the "realism" of the film. His survival is intended to be almost supernatural. Note that there is no possible way Pinbacker could have made it from Icarus I to Icarus II, but he does somehow and it's never explained.
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