The audience is invisible and that's good. Somewhere my voice is drifting through a swine barn and the sound of it seems to perk up the sows' appetite. Or a lady is listening on headphones as she jogs along a beach, running to my cadence. Or a dog sits in front of the radio, head cocked, and the sibilants excite him in some mysterious way. A dog's humorist, that's me. - Garrison Keillor