Authors:

A Half-Blood of the eldest gods, Shall reach sixteen against all odds And see the world in endless sleep The Hero's soul, cursed blade shall reap A single choice shall end his days Olympus to preserve or raze.

Rick Riordan (2013). “Demigods and Monsters: Your Favorite Authors on Rick Riordan's Percy Jackson and the Olympians Series”, p.161, BenBella Books, Inc.
A Half-Blood of the eldest gods, Shall reach sixteen against all odds And see the world in endless sleep The Hero's soul, cursed blade shall reap A single choice shall end his days Olympus to preserve or raze.