I am a longtime fan of public radio. It began years ago with Garrison Keillor, whose weekly monologues on Lake Wobegon became a regular feature of my Saturday evenings. With my transistor radio perched on my kitchen windowsill, I would put supper together during the first hour of the show. The music was a little corny and the comedy kind of silly, but when Keillor said, “It’s been a quiet week in Lake Wobegon . . .” I sat down on my tall stool to give him my full attention.