Words of Radiance (The Stormlight Archive, #2)

by Brandon Sanderson

“Natural laws?” Syl said, finding the concept amusing. “Laws are of men, Kaladin. Nature doesn’t have them!” “If I toss something upward, it comes back down.” “Except when it doesn’t.” “It’s a law.” “No,” Syl said, looking upward. “It’s more like . . . more like an agreement among friends.” He looked at her, raising an eyebrow. “We have to be consistent,” she said, leaning in conspiratorially. “Or we’ll break your brains.”