Such an exception as this is, therefore, rather a confirmation of the rule. And indeed, if we consider all the eight experiments I have explained, we shall find that the same principle appears in all of them, and that 'tis by means of a transition arising from a double relation of impressions and ideas, pride and humility, love and hatred are produced. An object without a relation,[1] or with but one,[2] never produces either of these passions; and 'tis found[3] that the passion always varies in conformity to the relation. Nay we may observe, that where the relation, by any particular circumstance, has not its usual effect of producing a transition either of ideas or of impressions,[4] it ceases to operate upon the passions, and gives rise neither to pride nor love, humility nor hatred. This rule we find still to hold good, even under the appearance of its contrary;[5] and as relation is frequently experienced to have no effect, which upon examination is found to proceed from some particular circumstance that prevents the transition; so, even in instances where that circumstance, though present, prevents not the transition, 'tis found to arise from some other circumstance which counterbalances it. Thus, not only the variations resolve themselves into the general principle, but even the variations of these variations. [1] First experiment. [2] Second and third experiments. [3] Fourth experiment. [4] Sixth experiment. [5] Seventh and eighth experiments. SECTION III. DIFFICULTIES SOLVED. After so many and such undeniable proofs drawn from daily experience and observation, it may seem superfluous to enter into a particular examination of all the causes of love and hatred. I shall therefore employ the sequel of this part, _first_, in removing some difficulties concerning particular causes of these passions; _secondly_, in examining the compound affections, which arise from the mixture of love and hatred with other emotions.