That we can know the phenomena, only as far as we have attended to their sequences, and that, without experiment, therefore, it would have been impossible for us to predict any of their successions, is equally true, in mind as in matter. Many of the successions, indeed, are so familiar to us, that it may appear to you, at first, very difficult to conceive, that we should not have been able, at least with respect to them, to predict, originally, _what_ antecedents would have been followed by _what_ consequents. We may allow certainly, that we should not have been able to foresee the pleasure which we receive from the finer works of imitative art--from the successions, or co-existences, in music, of sounds, that, considered separately, would scarcely be counted among the sources of delight--from the charm of versification, that depends on circumstances, so very slight, as to be altogether destroyed, and even converted into pain, by the change of quantity of a single syllable. But, that the remembrance of pleasure should not be attended with desire of enjoying it again, seems to us almost inconsistent with the very nature of the pleasing emotion. In like manner, we may allow, that we could not have predicted the sympathy which we feel with the distresses of others, when they arise from causes that cannot affect us, and yet make, for the time, the agony, which we merely behold, a part of our own existence. But we can scarcely think, that we require _any_ experience, to know, that the contemplation of pain, which we may ourselves have to endure, should be the cause of that painful feeling, to which we give the name of _fear_, or that the actual suffering should be accompanied with the desire of relief. The truth is, however, that, in all these cases, and in all of them equally,--it would have been impossible, but for experience, to predict the consequent of any of the antecedents. The pleasure, which we feel, in the contemplation of a work of art, the pain, which we feel, at the sight of the misery of others, are as much the natural effects of states of mind preceding them, as the fear of pain is the effect of the consideration of pain as hanging over us. Our various feelings, similar or dissimilar, kindred or discordant, are all mere states of the mind; and there is nothing, in any one state of the mind, considered in itself, which, necessarily, involves the succession of any other state of mind. That particular state, for example, which constitutes the mere feeling of pain, instead of being attended by that different state which constitutes the desire of being freed from pain, might have continued, as one uniform feeling, or might have ceased, and been succeeded by some other state, though in the original adaptation of our mental frames, by that Creator's wisdom which planned the sequences of its phenomena, the particular affection, which constitutes _desire_, had not been one of the innumerable varieties of affection,