I was watching Anthony Bourdain in China a few minutes ago, and he used a phrase that intrigued me. He referred to a particular temple as a place "where Daoism changed from a philosophy to a religion for many people".
Does that actually happen, and if so, how? It seems to me that religion requires a theistic element most philosophy doesn't have, and such an element can't easily be incorporated into an existing philosophical framework. It has to be part of the philosophy from the start. But I certainly am no expert. If someone out there can provide a possible philosophy-to-religion mechanism, I'd love to know about it.
In Anthony's case, I think he used the term "religion" in anther sense, to express a increase in intensity of adherence to the philosophy.