"I wasn't good enough for abnegation," I say, "and I wanted to be free. So I chose Dauntless." "Why weren't you good enough?" "Because I was selfish." I say. "You were selfish? You aren't anymore?" "Of course I am. My mother said that everyone is selfish," I say, "but I became less selfish in Dauntless. I discovered there were people I would fight for. Die for, even."

Source: Veronica Roth (2014). “Divergent Series Ultimate Four-Book Collection: Divergent; Insurgent; Allegiant; Four”, p.26, Harper Collins