And if we really fear the darkness, if we really fight against it, then, for the good of all, let us take our rockets, let us get well used to the great cold and heat, the no water, the no oxygen, let us become Martians on Mars, Venusians on Venus, and when Mars and Venus die, let us go to the other solar systems, to Alpha Centauri, to wherever we manage to go, and let us forget the Earth....all that matters is that somehow life should continue, and the knowledge of what we were and what we did and learned: the knowledge of Homer and Michelangelo, of Galileo, Leonardo, Shakespeare, of Einstein! And the gift of life will continue.
-Ray Bradbury