§ 94. The extent to which sympathy may develop when the hinderances are removed, will be better conceived after observing the agencies through which it is excited, and setting down the reasons for expecting those agencies to become more efficient. Two factors have to be considered--the natural language of feeling in the being sympathized with, and the power of interpreting that language in the being who sympathizes. We may anticipate development of both. Movements of the body and facial changes are visible effects of feeling which, when the feeling is strong, are uncontrollable. When the feeling is less strong, however, be it sensational or emotional, they may be wholly or partially repressed; and there is a habit, more or less constant, of repressing them; this habit being the concomitant of a nature such that it is often undesirable that others should see what is felt. So necessary with our existing characters and conditions are concealments thus prompted, that they have come to form a part of moral duty; and concealment for its own sake is often insisted upon as an element in good manners. All this is caused by the prevalence of feelings at variance with social good--feelings which cannot be shown without producing discords or estrangements. But in proportion as the egoistic desires fall more under control of the altruistic, and there come fewer and slighter impulses of a kind to be reprobated, the need for keeping guard over facial expression and bodily movement will decrease, and these will with increasing clearness convey to spectators the mental state. Nor is this all. Restrained as its use is, this language of the emotions is at present prevented from growing. But as fast as the emotions become such that they may be more candidly displayed, there will go, along with the habit of display, development of the means of display; so that besides the stronger emotions, the more delicate shades and smaller degrees of emotion will visibly exhibit themselves; the emotional language will become at once more copious, more varied, more definite. And obviously sympathy will be proportionately facilitated.