I didn't recall hearing this conversation on my first PT. I rarely hear Blackwall jump into other people's conversations so this exchange was a nice surprise for me.
Solas: "The Grey Wardens allow elves and dwarves into their ranks?"
Varric: "Qunari, too, I imagine. They don't care about titles or blood, just stopping the Blight."
Solas: "A pity they do it so badly then."
Blackwall: "Would you care to repeat that?"
Solas: "Argue if you like. Your fight against the darkspawn is noble, but what progress have you made?"
Varric: "I may not like everything they've done, but without the Wardens, we'd all be blighted by now."
Solas: "They've bought us some time, I will grant them that."