Mark Watney

"Today marks the first day of the second half of my life on Mars."

"It's not a complete miracle. It's just a partial miracle."

"When you're alone on Mars, any meal that's not a Thanksgiving dinner is just food."

"With careful rationing, it'll last just over a year. And then I'll starve to death."

"I'm still alive. That's something."

"The laws of physics are the canvas God laid down on which to paint his masterpiece."

"I'm a god now, and Mars is my world."

"And so ends another day on Mars. I'm still alive. I'm still sane."

"What's the worst that could happen? I'm already on Mars."

"Every problem has a solution if you're creative enough."

"I can live on Martian dust if I can figure out how."

"It's not a disaster if I can solve it."

"My plans are rapidly becoming more insane."

"I'm still breathing, which is the first step to not being dead."

"I have to keep doing what I'm doing to stay alive."

"Everything I do today is either incredibly stupid or absolutely genius."

"I choose to stay alive for one more day, and then another."

"The beauty of science is that it works whether or not you believe in it."

"I'm taking a very long road trip. It's just on a different planet."

"Surviving on Mars is a matter of will, not chance."

"I would have volunteered for this mission even knowing what would happen."

"Every step forward is a victory in itself."

"I'm not giving up. Not today, not tomorrow, not ever."

"The most important thing is that I don't give up."

"I can either panic or be productive. I choose to be productive."

"There's no shame in admitting the odds are against me."

"I'm going to die here, but not today."

"The key to survival is adapting to your environment."

"I've learned that human ingenuity is our greatest tool."

"When you're alone, your thoughts become your greatest companions."