We may perhaps most conveniently begin our discussion with a re-definition of some of our principal terms. We have hitherto spoken of the object of metaphysical knowledge indifferently as “Being,” “What is,” “What truly exists,” and as “Reality,” “the ultimately real.” So far as it is possible to draw a distinction between these two sets of names for the same thing, we may say that each series lays special stress on a somewhat different aspect of our object. When we say that a thing “is” or “has Being,” we seem primarily to mean that it is an _object_ for the knowing consciousness, that it has its place in the system of objects which coherent thought recognises. When we call the same object “real” or a “reality,” we lay the emphasis rather on the consideration that it is something of which we categorically _must_ take account, whether we like it or not, if some purpose of our own is to get its fulfilment.[31] Thus again the “non-existent” primarily means that which finds no place in the scheme of objects contemplated by consistent scientific thought; the “unreal,” that with which we have not, for any human purpose, to reckon. This is what is often expressed by saying that reality means what is independent of our own will, what exercises resistance, what constrains or compels our recognition, whether we like it or not. Philosophers have pointed out that this way of putting the case is only half the truth. The “stubborn” facts or realities which, as we commonly say, force us to recognise them, only do so in consequence of the presence in us of definite interests and purposes which we cannot effect without adapting ourselves to the situation expressed by our statement of the “facts.” What lies entirely outside my interests and plans gets no kind of recognition from me; it is “unreal” for me precisely because I have no need to take account of it as a factor to be reckoned with in the pursuit of my special ends. Thus, so long as we use the term in a relative sense and with reference to the special ends of this or that particular agent, there may be as many different orders of “reality” as there are special purposes, and what is “real” for the agent inspired by one purpose may be unreal for his fellows whose purposes are different. Thus, for example, to an English Christian living at home in England the rules of “caste” in India are usually for all practical purposes unreal; he has no need to take their existence into account as a condition of the successful prosecution of any of his aims and interests; for him they have no more significance than the rules of legal procedure adopted in Wonderland. But for the historian of Indian society, the native Hindu Christian, and the devout worshipper of Shiva, the rules of caste are a true reality. Not one of the three can execute _his_ special purposes without taking them into account and allowing them to operate in determining his way of proceeding to his goal. Again, the kind of