The Lightning Thief
I felt so relieved, I wanted to cry, though I didn't think that would be very heroic. Grover was the only friend I'd ever had for longer than a few months. I wasn't sure what good a satyr could do against the forces of the dead, but I felt better knowing he'd be with me. (9.192)
"Your mom stayed with him to protect you. She was a smart lady. She must've loved you a lot to put up with that guy—if that makes you feel any better." (10.100)
The truth was I didn't care about retrieving Zeus's lightning bolt, or saving the world, or even helping my father out of trouble.
All I cared about was my mom. Hades had taken her unfairly, and Hades was going to give her back. (10.103-104)