I don't smile much, and I never laugh. It's just something that's in me. If you'd been through what I've been through, you wouldn't be smiling, either.
Notes from Wikiquote
Also see Obama calls black golf trailblazer Sifford a 'legend by Reuters
Quote text and notes from Wikiquote: Charlie Sifford (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.