Chuck tells Dan that they're from different worlds, and that Dan, by virtue of his middle-class stature, can't afford (in so many ways) to get suspended or expelled. Chuck, by contrast, can simply have his dad buy his way out of trouble.
Sometimes you need to step outside, clear your head and remind yourself of who you are. And where you wanna be. And sometimes you have to venture outside your world in order to find yourself. As for me, I'm happy right where I am. I only wanna be with you. xoxo ... Gossip Girl