practically when I see that the engine is going to run off the line, and it does so.
A desired object (as desired) is a thought, and my thought; but it is something more, and that something more is, in short, that it is desired by me. And we ought by right, before we go further, to exhibit a theory of desire; but, if we could do that, we could not stop to do it. However, we say with confidence that, in desire, what is desired must in all cases be self.
If we could accept the theory that the end or motive is always the idea of a pleasure (or pain) of our own, which is associated with the object presented, and which is that in the object which moves us, and the only thing which does move us, then from such a view it would follow at once that all we can aim at is a state of ourselves.
We can not, however, accept the theory, since we believe it both to ignore and to be contrary to facts (see Essay VII.); but, though we do not admit that the motive is always, or in most cases, the idea of a state of our feeling self, yet we think it is clear that nothing moves unless it be desired, and that what is desired is ourself. For all objects or ends have been associated with our satisfaction, or (more correctly) have been felt in and as ourselves, or we have felt ourselves therein; and the only reason why they move us now is that, when they are presented to our minds as motives, we do now feel ourselves asserted or affirmed in them. The essence of desire for an object would thus be the feeling of our affirmation in the idea of something not ourself, felt against the feeling of ourself as, without the object, void and negated; and it is the tension of this relation which produces motion. If so, then nothing is desired except that which is identified with ourselves, and we can aim at nothing, except so far as we aim at ourselves in it.
But passing by the above, which we can not here expound and which we lay no stress on, we think that the reader will probably go with us so far as this, that in desire what we want, so far as we want it, is ourselves in some form, or is some state of ourselves; and that our wanting anything else would be psychologically inexplicable.
Let us take this for granted then; but is this what we mean by
