“I'd always known that when you went through one of these doors, you went to another planet, and that that other planet might be so far away, you couldn't fly there in spaceship in a million years. Somehow, the whole thing had never seemed strange before today.”

“The thing is, you make choices. You do some things and you don't do others and in the end there's not much point in asking what different choices might have gained you, and lost you, unless you have a time machine. You become those choices, you embody them...I'd known I couldn't stay, just as I'd known years before I couldn't be with him, even as I'd gone on pretending I had a choice. I was who I was, and I wanted what I already had.”

“But I'm still thinking about being born on a spaceship, an honest to badness spaceship. Growing up while flying along the stars, able to go wherever you wanted, not stuck on some hateful planet which clearly don't want you. You could go anywhere. If one place didn't suit, you'd find another. Full freedom in all direkshuns. Could there possibly be anything cooler in the whole world than that?”

“I always tried to imagine what it would be like to open your door to find something you had given up on. maybe it had seen places you never had, been rerouted and passed through so many strange hands, but still somehow found its way back to you, all before the day even began. ”

“Do you see the slightest evidence anywhere in the universe that creation came to an end with the birth of man? Do you see the slightest evidence anywhere out there that man was the climax toward which creation had been straining from the beginning? ...Very far from it. The universe went on as before, the planet went on as before. Man's appearance caused no more stir than the appearance of jellyfish.”

“You had to exert yourself to see this world. But if you did, if you had that kind of curiosity, if you had an innate interest in the welfare of your fellow human beings, and if you went through that door, a strange thing happened: you left your petty troubles on the threshold. It could be addictive”