In reply to Andy Johnson:
I heard this broadcast on Radio 4, and still hear the laconic, self-assured style, which is a little irritating. I part way through thought, "well most people cannot afford to be a recluse, either fiscally, or to some extent, socially." He can afford it, presumably, since he has already earned his stash, so does not need to go out and work to earn his keep, or can do the odd bit from home. Plus, presumably his family do not need him per se(?).