How do we know when we are truly interacting in a "spiritual" world. I like this explanation: Knowing you are no longer expressing yourself but feeling one with yourself. For it is a longing to be united within that drives us forward. But what mask do we wear?
The spiritual fulfillment of a man depends on how he is able to project himself into the spiritual world as he performs. He really doesn't perform for the third parties who form the audience. Rather the audience becomes his personal self. He tries to express to himself his own conceptions about the spiritual ideals that he sees... He is able to do so behind the (his) mask because he has lost his personal identity.
Sam Gill on the use of the mask in Native American ceremony