By your own definition we are all holders of an infinite number of belief systems for every conceivable or yet to be conceived unknown. (religion.blogs.cnn.com)
There is no wrong or right in belief systems there is only poor or healthy moral judgement. (religion.blogs.cnn.com)
I would also encourage them to learn more about different belief systems as I have done, but they wont be brought up with it like I was. (religion.blogs.cnn.com)