What are you going to do with astronauts who first reach the surface of Mars and then turn around and rocket back home-ward? What are they going to do, write their memoirs? Would they go again? Having them repeat the voyage, in my view, is dim-witted. Why don't they stay there on Mars?
Buzz Aldrin, Leonard David (2013). “Mission to Mars: My Vision for Space Exploration”, p.167, National Geographic Books
