Rick Riordan

"Part of their problem was Percy. He fought like a demon, whirling through the defender's ranks in a completely unorthodox style, rolling under their feet, slashing with his sword instead of stabbing like a Roman would, whacking campers with the flat of his blade, and generally causing mass panic."

"Deadlines just aren't real to me until I'm staring one in the face."

"I could have killed you.”“Or I could have killed you,” Percy said. Jason shrugged. “If there’d been an ocean in Kansas, maybe.”“I don’t need an ocean—”“Boys,” Annabeth interrupted, “I’m sure you both would’ve been wonderful at killing each other. But right now, you need some rest.”Food first,” Percy said. “Please?"

"I hate Hera."

"Percy: You just hit the lord of the titans with a blue plastic hairbrush."

"Nothing lasts forever. But the thing is, you can reuse some. Use your mind. - Leo's Mother, The Lost Hero."

"Fear can’t be reasoned with. Neither can hate. They’re like love. They’re almost identical emotions. That’s why Ares and Aphrodite like each other. Their twin sons – Fear and Panic – were spawned from both war and love."

"This is Annabeth,” Jason said. “Uh, normally she doesn't judo-flip people."

"He looked at the silver pocketknife in his hand. An idea came to him – possibly the stupidest, craziest idea he’d had since he thought, Hey, I’ll get Percy to swim in the River Styx! He’ll love me for that!"

"Don't talk to my sister that way.' Nico said. His voice quivered, but I was impressed that he had the guts to say anything at all. — Percy."

"Piper: it looks like we have hole. Percy: Yeah we've got a dam hole! (LOL-ing) Piper: What! Percy: Inside joke. (still LOL-ing) Piper: Whatever."

"It seemed weird calling a teenager 'sir' but I'd learned to be careful with immortals. They tended to get offended easily. Then, they blew stuff up."