We have been so successful in the past century at the art of living longer and staying alive that we have forgotten how to die. Too often we learn the hard way. As soon as the baby boomers pass pensionable age, their lesson will be harsher still.
Terry PratchettOf course, like all the informal inhabitants of the University the roaches were a little unusual, but there was something particularly unpleasant about the sound of billions of very small feet hitting the stones in perfect time. Rincewind stepped gingerly over the marching column. The Librarian jumped it. The Luggage, of course, followed them with a noise like someone tapdancing over a bag of crisps.
Terry Pratchett