What is nature? What is it for something to be natural? We'll begin to address these questions by looking at a survey of a few common ways people have thought about nature and what is natural. Exploring these multifarious concepts leads, I think naturally, to the question of how these different conceptions of nature are related? Is there anything they all have in common? Is there really only one "nature"? Or do different senses of "nature" have genuinely distinct referents?