I feel so out of place among these aristocrats, with their bank accounts and posh manners. No matter how much money the Republic throws at me, I will forever be the boy from the streets. And I’d forgotten that a boy from the streets is no match for the future Princeps.
-- Day (Chapter 3)

Importance: This quote, in which Day attends the Banquet at the Capitol, highlights the impact of class on the way Day interacts with the world around him.

I will die with honor for sacrificing everything I have – everything – for my country. And yet, Day is the legend, while I am to be executed… it makes no sense’ ‘You’re wrong,’ I say sadly. ‘It makes perfect sense.’ ‘Why?’ ‘Because Day chose to walk in the light.
-- Thomas, June (Chapter 6)

Importance: In this quote June points out the difference between Day and Thomas. While they are both loyal to the Republic in some sense...