But none of this is what the Night Soil Salvagers do. Not as they would have it. What the Night Soil Salvagers do is lessen the burden of the city on the Earth. On a good night—and what night is not good to the Night Soil Salvagers?—one will greet another with, “The city is light tonight.” And the other will reply, “Let it be so light that under the moon it rises up.”

