"The purpose of going to Mars is for humans to first begin to occupy, permanently, another planet in the solar system. The astronauts or pilgrims, whatever you might call them, are going to be very historically unique human beings."

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One peculiarity of an astronaut's job is that we do everything in public. Also, you don't want to make a mistake. In the best case, it's an embarrassment, in the worst, death. That's also part of the training. They teach you to think like an astronaut, like they do with a pilot, a military man, a fireman. You dissociate in your mind the gravity of the consequences of your mistake.

— David Saint-Jacques