Grief as well as joy are infectious: the emotions they raise in a spectator resemble them perfectly. Fear is equally infectious: and hence in an army, fear, even from the slighted cause, making an impression on a few, spreads generally through all, and becomes an universal panic. Pity is similar to its cause. A parting scene betwixt lovers or friends, produceth in the spectator a sort of pity, which is tender like the distress. The anguish of remorse, produceth pity of a harsh kind; and if the remorse be extreme, the pity hath a mixture of horror. Anger I think is singular; for even where it is moderate and causeth no disgust, it disposes not the spectator to anger in any degree[47]. Covetousness, cruelty, treachery, and other vicious passions, are so far from raising any emotion similar to themselves, to incite a spectator to imitation, that they have an opposite effect. They raise abhorrence, and fortify the spectator in his aversion to such actions. When anger is immoderate, it cannot fail to produce the same effect. PART VII. _Final causes of the more frequent emotions and passions._ It is a law in our nature, that we never act but by the impulse of desire; which in other words is saying, that it is passion, by the desire included in it, which determines the will. Hence in the conduct of life, it is of the utmost importance, that our passions be directed upon proper objects, tend to just and rational ends, and with relation to each other be duly balanced. The beauty of contrivance, so conspicuous in the human frame, is not confined to the rational part of our nature, but is visible over the whole. Concerning the passions in particular, however irregular, headstrong, and perverse, in an overly view, they may appear, I propose to show, that they are by nature adjusted and tempered with admirable wisdom, for the good of society as well as for private good. This subject is extensive: but as the nature of the present undertaking will not admit a complete discussion, it shall suffice to give a few observations in general upon the sensitive part of our nature, without regarding that strange irregularity of passion discovered in some individuals. Such topical irregularities, if I may use the term, cannot fairly be held an objection to the present theory. We are frequently, it is true, misled by inordinate passion: but we are also, and perhaps not less frequently, misled by wrong judgement.