Free Will
One component of Borges' labyrinth motif is how significant our capacity to choose is, if it exists at all. A prime example of this is The Lottery in Babylon, where a secret society that spawns out of a lottery ends up dictating all events of the lives of Babylonians. If all of our experiences are the results of external agents - be they other people, God, fate, or quantum mechanics --then do we have free will? Or, is the question not even relevant at this point? Borges routinely creates situations posing questions such as these.