[Hazel] hissed in frustration. 'I hate eidolons. I thought Piper made them promise to stay away.' 'Oh...' Frank said, like he'd just had his own daily happy thought. 'Piper made them promise to stay off the ship and not possess any of us. But if they followed us, and used other bodies to attack us, then they're not technically breaking their vow...' 'Great,' Leo muttered. 'Eidolons who are also lawyers. Now I really want to kill them.

Annabeth’s shoulders ached. The elevator’s easy-listening music didn’t help. If all monsters had to hear that song about liking piña coladas and getting caught in the rain, no wonder they were in the mood for carnage when they reached the mortal world.

Annabeth recognized something else in her face, too - in the hard set of her mouth and the deliberate way she raised her chin like she was ready to accept any challenge. Reyna was forcing a look of courage, while holding back a mixture of hopefulness and worry and fear that she couldn't show in public. Annabeth knew that expression. She saw it every time she looked in a mirror.

Hubris means deadly pride. Thinking you can do things better than anyone else.

It is true I do not like fire. But Leo Valdez's flames are not strong enough to trouble me." Somewhere behind Hazel, a soft, lyrical voice said, "What about my flames, old friend?" "You," he said from Percy's mouth. "Me," Hecate agreed. "It has been millennia since I fought at the side of a demigod. What do you say? Shall we play with fire?

You deal with mythological stuff for a few years, you learn that paradises are usually places where you get killed.

Honestly, I thought I was going to be a kite forever, suffocating inside a little feathery prison. And he had the nerve to make fun!