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“No,’ Nico said. ‘Getting a second life is one thing. Making it a better life, that’s the trick.’ As soon as he said it, Nico realized he could’ve been talking about himself. He decided not to bring that up.”
― Rick Riordan, The Blood of Olympus

“Really? That would be a first. I'm the son of Hades, Jason. I might as well be covered in blood or sewage, the way people treat me. I don't belong anywhere. I'm not even from this century. But that's not enough to set me apart.”
― Rick Riordan, The House of Hades

“Please!’
That word didn’t make sense to Nico. The Underworld had no mercy. It only had justice.
‘You’re already dead,’ Nico said. ‘You’re a ghost with no tongue, no memory. You won’t be sharing any secrets.”
― Rick Riordan, The Blood of Olympus

“Then there was Nico di Angelo. Dang, that kid gave Leo the freaky-deakies. He sat back in his leather aviator jacket, his black T-shirt and jeans, that wicked silver skull ring on his finger, and the Stygian sword at his side. His tufts of black hair struck up in curls like baby bat wings. His eyes were sad and kind of empty, as if he’d stared into the depths of Tartarus—which he had.”
― Rick Riordan, The House of Hades