Umberto Eco looks for a book in his private library

In this footage, Umberto Eco, the late professor and novelist, hunts down a book in his enormous private library. He knows where it is, but it takes a while to get there.

Eco's library contained 30,000 books and tended to separate visitors into two categories: 'those who react with 'Wow! Signore professore dottore Eco, what a library you have! How many of these books have you read?' and the others — a very small minority — who get the point that a private library is not an ego-boosting appendage but a research tool. Read books are far less valuable than unread ones." By that measure, Eco might have amassed an even more valuable library than his fans would assume.