Imagine your grave on a windy winter night: you’ve been dead seventy years; it’s been fifty since a visitor last paused at your tombstone—now explain why you’re in a pissy mood today.

—S. M. TOMLINSON, One Fathom Above Sea Level

A valid point Darwin didn’t make but could have made: In most dimorphic species, males are interchangeable, so expendable. Perhaps that’s why male vertebrates inherit the war gene.

—MARION D. FORD, “Sexual Dimorphism in Gulf Fishes”