Others have commented on ethics vs morality. As for maze vs labyrinth... These are synonymous words. One comes from Greek, the other is Germanic. I wasn't able to find a single dictionary that defines a labyrinth as having a single path that draws towards the center. Where did the author pick up that from? Doesn't the author find it strange that the example from Greek mythology (the word labyrinth is Greek...) is already a counterexample?