Accordingly we find, that a beautiful house, belonging to ourselves, produces pride; and that the same house, still belonging to ourselves, produces humility, when by any accident its beauty is changed into deformity, and thereby the sensation of pleasure, which corresponded to pride, is transformed into pain, which is related to humility.

The double relation between the ideas and impressions subsists in both cases, and produces an easy transition from the one emotion to the other.
In a word, nature has bestowed a kind of attraction on certain impressions and ideas, by which one of them, upon its appearance, naturally introduces its correlative.

If these two attractions or associations of impressions and ideas concur on the same object, they mutually assist each other, and the transition of the affections and of the imagination is made with the greatest ease and facility.

When an idea produces an impression, related to an impression, which is connected with an idea, related to the first idea, these two impressions must be in a manner inseparable, nor will the one in any case be unattended with the other.

It is after this manner, that the particular causes of pride and humility are determined.