" Does identity matter anyway? I have my doubts. We are what we do, not what we think. Only the interactions count (there is no problem with free will here; that’s not incompatible with believing your actions define you). And what is free will anyway? Chance. The random factor. If one is not ultimately predictable, then of course that’s all it can be. "

― Iain M. Banks , The Player of Games (Culture, #2)