Don't assume he's read even a quarter of them. From Black Swan, regarding Umberto Eco's private library of 30k books: "... a private library is not an ego-boo

Don't assume he's read even a quarter of them. From Black Swan, regarding Umberto Eco's private library of 30k books: "... a private library is not an ego-boosting appendage but a research tool. Read books are far less valuable than unread ones. The library should contain as much of what you do not know [as possible]." (emphasis Taleb's)