Johnny Carson, who died this morning at the age of 79, devoted most of his adult life to that most ephemeral of endeavors, hosting a late-night talk show. I must have seen several hundred episodes of The Tonight Show in my lifetime, and I even went out of my way to watch the last one, yet I doubt I’ve thought of Carson more than once or twice in the thirteen years since he retired, just as I doubt that anyone now alive can quote from memory anything he said on any subject whatsoever….
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