Rick Riordan said this quote
“ Nico scowled. ‘It’s none of your business, but I don’t belong. That’s obvious. No one wants me. I’m a child of –’ ‘Oh, please.’ Will sounded unusually angry. ‘Nobody at Camp Half-Blood ever pushed you away. You have friends – or at least people who would like to be your friend. You pushed yourself away. If you’d get your head out of that brooding cloud of yours for once – ”