I'm just a kid, Chiron," I said miserably. "What good is one lousy hero against something like Kronos?" Chiron managed a smile. '"What good is one lousy hero'? Joshua Lawrence Chamberlain said something like that to me once, just before he single-handedly changed the course of your Civil War.
Rick Riordan (2007). “The Sea of Monsters”, Disney-Hyperion