[Chap 3, Pg 44 + Chap 2, Pg 41] There's a CONTRAST between:
He is not INSISTING any Confidence, it suggests that Steinbeck is insinuating that Slim respects other people’s PRIVACY and other people, just as they Respect Him
Curley attempts to FORCE a Response out of the other Ranch Workers, when he asks if they've seen his Wife, almost like he is DEMANDING RESPECT