The manager of one of the biggest book stores in
New York was selling the same book (Golden Dreams by Mr. Slush) to different people as a powerful book, as a fiction book, as a love story book, a a humorous book; to one lady Golden Dreams was sold as the reading for a holiday, to another as the very book to read after a holiday;
another bought it as a book for a rainy day, and a fourth as the right sort of
reading for a fine day.
The idea is that it was the ability of the manager to be a good seller, no matter what lies he was telling to his customers.