" Because time is not like space. And when you put something down somewhere, like protractor or a biscuit, you can have a map in your head to tell you where you have left it, but even if you don't have a map it will still be there because a map is representation of things that actually exist so you can find the protractor or the biscuit again. And a timetable is map of time, except that if you don't have timetable time is not there like the landing and the garden and the route to school. Because time is only the relationship between the way different things change, like the earth going round the sun and atoms vibrating and clocks ticking and day and night and waking up and going to sleep, and it's like west or nor-nor-east wich won't exist when the earth stops existing and falls into the sun because it is only a relationship between the North Pole and the South Pole and everywhere else, like Mogadishu and Sunderland and Canberra. "

― , The Curious Incident of the Dog in the Night-Time