The conclusion I draw from these two principles, joined to the influence of comparison above-mentioned, is very short and decisive. Every object is attended with some emotion proportioned to it; a great object with a great emotion, a small object with a small emotion. A great _object_, therefore, succeeding a small one, makes a great _emotion_ succeed a small one. Now, a great emotion succeeding a small one becomes still greater, and rises beyond its ordinary proportion. But as there is a certain degree of an emotion which commonly attends every magnitude of an object, when the emotion increases, we naturally imagine that the object has likewise increased. The effect conveys our view to its usual cause, a certain degree of emotion to a certain magnitude of the object; nor do we consider, that comparison may change the emotion without changing any thing in the object. Those who are acquainted with the metaphysical part of optics, and know how we transfer the judgments and conclusions of the understanding to the senses, will easily conceive this whole operation. But leaving this new discovery of an impression that secretly attends every idea, we must at least allow of that principle from whence the discovery arose, _that objects appear greater or less by a comparison with others_. We have so many instances of this, that it is impossible we can dispute its veracity; and 'tis from this principle I derive the passions of malice and envy. 'Tis evident we must receive a greater or less satisfaction or uneasiness from reflecting on our own condition and circumstances, in proportion as they appear more or less fortunate or unhappy, in proportion to the degrees of riches, and power, and merit, and reputation, which we think ourselves possest of. Now, as we seldom judge of objects from their intrinsic value, but form our notions of them from a comparison with other objects, it follows, that according as we observe a greater or less share of happiness or misery in others, we must make an estimate of our own, and feel a consequent pain or pleasure. The misery of another gives us a more lively idea of our happiness, and his happiness of our misery. The former, therefore, produces delight, and the latter uneasiness.