Edward's first inclination is to agree. Then logic, that pesky hosebeast, kicks in, and he sits back, crossing his arms and letting his head loll back so he can stare at the ceiling. "We'd have to figure out how to ascertain if this Envy's Edward is even still alive. If Envy's looking for new ones, he might've killed the original already," he points out.
"And if he is alive, we have to be prepared for the idea that he may not be able to recover, and taking him away from the only world he knows anymore would be tantamount of killing him. I'm inclined to agree, we need to check out this Envy's world, but I think we should be very damn careful, and prepared to call it quits and leave things be."