Rick Riordan said this quote

I was trying to do you a favor, you silly woman. A few more hours in the fire, and your baby boy would have been immortal! He would’ve grown into a fine young god and brought you eternal honor. Now you’ve ruined the magic. He will simply be human—a great hero, yes, strong and tall, but doomed to a mortal life. He will only be Demophoon, when he could have been Fully Phoon! Phoon the Great!