Rick Riordan, The Mark of Athena

"We're staying together,"he promised. "You're not getting away from me. Never again."

"She'd secretly had a crush on him since they were twelve years old. Last summer, she'd fallen for him hard."

"She had to go on this quest. The fate of the world might depend on it. But part of him wanted to say: Forget the world. He didn’t want to be without her."

"Leo,” Hazel gasped, “I can’t—my arms—”“Hazel,” he said. “Do you trust me?”“No!”“Me neither,” Leo admitted."

"Ceres wanted a united front in the plant war.""The plant war,"Percy said. "You're going to arm all the little grapes with tiny assault rifles?"

"Hmm…” Jason snapped his fingers. “I can call a friend for a ride.”Percy raised his eyebrows. “Oh, yeah? Me too. Let's see whose friend gets here first."

"Down in the water, Octavian yelled, “Get me out of here! I’ll kill you!”“Tempting,” Percy called down."

"What are you talking about?"Narcissus demanded. "I am amazing. Everyone knows this.""Amazing at pure suck,"Leo said. "If I was as suck as you, I'd drown myself. Oh wait, you already did that."

"People usually asked her if she had a belly button. Of course she had a belly button. She couldn't explain how. She didn't really want to know."

"Hercules,huh? Percy frowned. "That guy was like the Starbucks of Ancient Greece. Everywhere you turn--there he is."

"It's okay,” he said. “We're together.” He didn't say you're okay, or we're alive. After all they'd been through over the last year, he knew that the most important thing was that they were together. She loved him for saying that."

"Delaying death is one of my favorite hobbies"