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To me the decisive reason in favor of our minds meeting in some common objects at least is that, unless I make that supposition, I have no motive for assuming that your mind exists at all. Why do I postulate your mind? Because I see your body acting in a certain way. Its gestures, facial movements, words and conduct generally, are ‘expressive,’ so I deem it actuated as my own is, by an inner life like mine. This argument from analogy is my reason, whether an instinctive belief runs before it or not. But what is ‘your body’ here but a percept in my field? It is only as animating that object, my object, that I have any occasion to think of you at all. If the body that you actuate be not the very body that I see there, but some duplicate body of your own with which that has nothing to do, we belong to different universes, you and I, and for me to speak of you is folly. Myriads of such universes even now may coexist, irrelevant to one another; my concern is solely with the universe with which my own life is connected.

In that perceptual part of my universe which I call your body, your mind and my mind meet and may be called conterminous. Your mind actuates that body and mine sees it; my thoughts pass into it as into their harmonious cognitive fulfilment; your emotions and volitions pass into it as causes into their effects.

But that percept hangs together with all our other physical percepts. They are of one stuff with it; and if it be our common possession, they must be so likewise. For instance, your hand lays hold of one end of a rope and my hand lays hold of the other end. We pull against each other. Can our two hands be mutual objects in this experience, and the rope not be mutual also? What is true of the rope is true of any other percept. Your objects are over and over again the same as mine. If I ask you where some object of yours is, our old Memorial Hall, for example, you point to my Memorial Hall with your hand which I see. If you alter an object in your world, put out a candle, for example, when I am present, my candle ipso facto goes out. It is only as altering my objects that I guess you to exist. If your objects do not coalesce with my objects, if they be not identically where mine are, they must be proved to be positively somewhere else. But no other location can be assigned for them, so their place must be what it seems to be, the same.[38]

Practically, then, our minds meet in a world of objects which they share in common, which would still be there, if one or several of the minds were destroyed. I can see no formal objection to this supposition’s being literally true. On the principles which I am defending, a ‘mind’ or ‘personal consciousness’ is the name for a series of experiences run together by certain definite transitions, and an objective reality is a series of similar experiences knit by different transitions. If one and the same experience can figure twice, once in a mental and once in a physical context (as I have tried, in my article on ‘Consciousness,’ to show that it can), one does not see why it might not figure thrice, or four times, or any number of times, by running into as many different mental contexts, just as the same point, lying at their intersection, can be continued into many different lines. Abolishing any number of contexts would not destroy the experience itself or its other contexts, any more than abolishing some of the point’s linear continuations would destroy the others, or destroy the point itself.