The Swords of Lankhmar (Fafhrd and the Gray Mouser Book 5)

by Fritz Leiber

Nehwon—a vast bubble leaping up forever through the waters of eternity. Like airy champagne … or, to certain moralists, like a globe of stinking gas from the slimiest, most worm-infested marsh.

Yield to curiosity without giving the mind time to get roiled, was one of his mottoes.