You're likely thinking of Groucho Marx's famous quote, "I've got a million dollar idea. I'll start a library and only rent out books I haven't read." This quote is
not from the book "Escape from the Library" - it's a
well-known Groucho Marx quote, often attributed to his role as the witty and sarcastic character in various films and radio shows.
There is no book titled "Escape from the Library" featuring this Groucho Marx quote. It's possible you're misremembering the source or title of the book.
Do you remember any other details about the book you're thinking of? Perhaps the author, publication date, or a specific plot point could help us identify it.