Do you think that spirituality, then, also has these laws or principles? I ask because I was reading a book on Buddhist teachings yesterday that would seem to argue the opposite.
The basis of buddhism is indeed meant to be four noble truths so I don't understand what you mean. However, everything you study, every field of study has certain principles which thus lead to the facts, the mechanics, the reality. Those who go away from this, especially in the field of spirit end up all 'mystical' and 'magical' and to me quite lost.
It reminds me of a story of a great mystic who taught how you must do this and do that and pray to this and that and follow certain proceedures. He taught the great mystery that you could never know. Well if that's true then how does he know?
The principle I gave here in this thread is the principle of acceptance. I gave it as a spiritual principle so yes I do think spirituality has principles to be understood.