{343} It may be alleged that, when I say "I have a sensation," I express the simple feeling, as derived from the outward sense; but that when I say "I believe I have a sensation," I express two things, the simple sensation, and the association with it, of that remarkable idea, the idea of myself. The association, however, is the same in both cases. As I never have the sensation of an object, the sight, for example, of a rose, without associating with it, the idea of position, and also that of unity; nor the _idea_ of such an object, without the same association; so I never have a sensation, nor the idea of that sensation, without associating with it, the idea of myself. And in both cases, the associations are of that remarkable class, which we have denominated inseparable. It is not in our power to prevent them. Whensoever the perception of the object exists, the idea of its position is sure to exist along with it; whensoever one of my sensations exists, the idea of myself exists along with {344} it; whensoever one of my _ideas_ exists, the idea of myself is sure to exist along with it. In the case, then, of a present sensation, and that of a present idea; the sensation, and the belief of the sensation; the idea, and the belief of the idea, are not two things; they are, in each case, one and the same thing; a single thing, with a double name. The several cases of Belief may be considered under three heads: I., Belief in events, real existences; II., Belief in testimony; and III., Belief in the truth of propositions. We shall consider them in their order; and first, Belief in events, real existences. I. This is subdivided into three distinct cases: 1, Belief in present events; 2, Belief in past events; 3, Belief in future events. 1. Belief in present events, again, is divided into two cases: 1, Belief in immediate existences present to my senses; 2, Belief in immediate existences not present to my senses. Belief in existences present to my senses, includes, for one element, belief in my sensations; and belief in my sensations, as we have just observed, is only another name for having the sensations. But belief in the external objects, is not simply belief in my present sensations; it is this, and something more. The something more, is now the object of our inquiry. I see, for example, a rose: my sensation is a sensation of sight: that of a certain modification of light; but my belief of the rose is not this; it is this, and much more.