Doonesbury by Garry Trudeau for November 05, 1971
Transcript:
Mike: Look! There's Charlie Green, the sidewalk guru. Let's go rap with him! Say professor Green, I'd like to ask you a question. What do you say to the many cynics who put down your best-selling book? Prof. Green: A cynic is someone who knows the price of everything and the value of nothing. Mike: Beautiful! Mark: Oh, wow! Prof. Green: Pretty soon I'm going to have to start charging.
And the Guru knows nothing of value.