One autumn afternoon, an elderly man entered a library, showing a card with his name on it - Mr John Eldred - and asked if he could borrow a book. 'The name of the book I want is The Tractate Middoth - it's number 11334, I believe,' he said. 'But 1 don't know this library at all. Would someone be able to go and find it for me?' A young man who worked there, Mr Garrett, was passing and he answered, 'Of course, I'll go and find it for you immediately, sir.' Mr Eldred sat down on a chair near the door to wai