Query: How to contrive not to waste one's time? Answer: By being fully aware of it all the while. Ways in which this can be done: By spending one's days on an uneasy chair in a dentist's waiting room; by remaining on one's balcony all a Sunday afternoon; by travelling by the longest and least-convenient train routes, and of course standing all the way; by queueing at the box-office of theatres and then not booking a seat.