He's not to that point of desperation yet, but he's sure it's bound to happen.

"Anything is technically possible, however unlikely. But I do certainly wish them luck. Specifically them, because should anyone else find out how to leave, they'll simply do so themselves without telling the rest of us. And I think those two will be more inclined to save the world, as it may be."

He might be talking about himself, but afterall, that's who he judges everyone else against.