terrypratchettparadise:

“One of the recurring philosophical questions is: ‘Does a falling tree in the forest make a sound when there is no one to hear?’

Which says something about the nature of philosophers, because there is always someone in the forest.  It may only be a badger, wondering what that cracking noise was, or a squirrel a bit puzzled by all the scenery going upwards, but someone.”

– Terry Pratchett – Small Gods