> My father just turned sixty and recently retired. He doesn’t socialize as he did before, and I often can’t get him to go out, even to sit on a park bench. He has missed two of our lunch dates in the past three months. Recently I brought him to a gathering of his old friends. They were discussing the latest crisis in the news and he just sat there without saying anything. Afterward, he told me that he didn’t know what they had been talking about. What could be the cause of this? How should I ha [...]