How we cite our quotes: (Chapter.Paragraph)
Quote #10
[…] in the gathering quiet it occurred to him that he had left Alan in a nest of magicians.
He went back faster than sound or light, fled uncaring through a city he could have owned to the one place that mattered […]. (17.31-32)
See that? The "one place that mattered" is the place where his brother is. It's kind of like that saying—home is where the heart is. For Nick, his brother = heart, and heart = home.