In a way, it’s nice to know that there are Greek gods out there, because you have somebody to blame when things go wrong. For instance, when you’re walking away from a bus that’s just been attacked by monster hags and blown up by lightning, and it’s raining on top of everything else, most people might think that’s just really bad luck; when you’re a half-blood, you understand that some divine force is really trying to mess up your day.” (The Titan’s Curse)

“Families are messy. Immortal families are eternally messy. Sometimes the best we can do is to remind each other that we’re related for better or for worse…and try to keep the maiming and killing to a minimum.” (The Sea of Monsters)

“Knowing too much of your future is never a good thing.” (The Lightning Thief)

“Humans see what they want to see.” (The Lightning Thief)

“The real world is where the monsters are.” (The Lightning Thief)

“Life is only precious because it ends, kid.” (The Son of Neptune)

Getting something and having the wits to use it…those are two different things. (The Battle of the Labyrinth)

“I’m nobody’s sidekick,” Annabeth growled. “And, Percy, his accent sounds familiar because he sounds like his mother. We killed her in New Jersey.”Percy frowned. “I’m pretty sure that accent isn’t New Jersey. Who’s his—? Oh.”It all fell into place. Aunty Em’s Garden Gnome Emporium—the lair of Medusa. She’d talked with that same accent, at least until Percy had cut off her head.“Medusa is your mom?” he asked. “Dude, that sucks for you.” (The Mark of Athena)

“I am Persephone” she said, her voice thin and papery. “Welcome, demigods.”Nico squashed a pomegranate under his boot. “Welcome? After last time, you’ve got the nerve to welcome me?”I shifted uneasily, because talking that way to a god can get you blasted into dust bunnies. “Um, Nico—”“It’s all right,” Persephone said coldly. “We had a little family spat.”“Family spat?” Nico cried. “You turned me into a dandelion!” (The Demigod Files)

“But remember, boy, that a kind act can sometimes be as powerful as a sword.” (The Battle of the Labyrinth)