We have a tendency to assume that knowledge and the availability thereof is a modern concept, but in actuality the huge Great Library of Alexandria and the Celsus library in Ephesus prove that the concept of libraries is an ancient one.
We tend to take for granted the notion that the people of the world can or should be taught to read. The ability to read is even used as an indicator of poverty and development. In 1998, the UN defined 80% of the world population as literate, defined as the ability to read and write a simple sentence in a language. It was not always thus. In ancient times, literacy was the trade secret of professional scribes.
From the Upcoming ueue, submitted by Arby.
Between the Library of Congress and the British Library there are 180 million holdings, 54 million of those being books according to wikipedia. I wonder how many of those books have been opened.