T 2.2.8.8

'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.