"Well, here's how it is, little girl. Six months ago another rocket came to Mars. There was a man named York in it, and his assistant. Whatever happened to them, we don't know. Maybe they crashed. They came in a rocket. So did we. You should see it! A big rocket! So we're the Second Expedition, following up the First! And we came all the way from Earth ..." (Captain Jonathan Williams, "August 1999: The Earth Men," p. 21)

"Chicken pox, God, chickenpox, think of it! A race builds itself for a million years, refines itself, erects cities like those out there, does everything it can to give itself respect and beauty, and then it dies. Part of it dies slowly, in its own time, before our age, with dignity. But the rest! Does the rest of Mars die of a disease with a fine name or a terrifying name or...