I am wondering if Zen study can be "separated" from buddhism. I have reason to believe some would say "yes", but, not knowing that much about buddhism, I don't know if many would also say "no". I'm asking if you believe there is a way to enlightenment that doesn't need a few basic ideas from Buddhism? If Buddhism is necessary, which ideas "must" the way utilize and still be called zen practice? Thank you so much.