When we look into a mirror we think the image that confronts us is accurate. But move a millimetre and the image changes. We are actually looking at a never-ending range of reflections. But sometimes a writer has to smash the mirror - for it is on the other side of that mirror that the truth stares at us.

http://ourworldinbalance.blogspot.co.uk/2005/12/story-of-harold-pinter.html