9. Concerning the mixture of affections, we may remark, in general, that when contrary passions arise from objects no way connected together, they take place alternately. Thus when a man is afflicted for the loss of a law-suit, and joyful for the birth of a son, the mind, running from the agreeable to the calamitous object; with whatever celerity it may perform this motion, can scarcely temper the one affection with the other, and remain betwixt them in a state of indifference.
It more easily attains that calm situation, when the same event is of a mixt nature, and contains something adverse and something prosperous in its different circumstances. For in that case, both the passions, mingling with each other by means of the relation, often become mutually destructive, and leave the mind in perfect tranquillity.
But suppose, that the object is not a compound of good and evil, but is considered as probable or improbable in any degree; in that case, the contrary passions will both of them be present at once in the soul, and instead of bal-lancing
