Another source of enjoyment is the discovery of certain qualities in intelligent minds. The perception of the qualities of matter through the medium of the senses is a very inferior source of gratification compared with the discovery of certain qualities of mind. This is the source of the highest enjoyment of which the mind is capable. The emotions thus awakened are called esteem, veneration, love, gratitude, and the like. _Love_, in its most general sense, is used for the pleasurable emotion which is felt in the discovery of any quality that is agreeable, either in matter or mind. Thus we are said to love the beauties of nature, to love delicious fruit, and to love the society of friends. But in relation to intelligent beings, it signifies pleasurable emotion in view of certain qualities and actions, attended with the desire of good to the object loved, and also a desire for reciprocated affection. There are certain qualities and attributes of mind which may be pointed out as the _causes_ of affection. The first is _intellectual superiority_. Our estimate of intellect is altogether _relative_. What in a child seems an astonishing display of it, would be considered puerility in a man. What excites admiration in a savage or in the unlettered, is regarded with little emotion in the man of education. There are various qualities of intellect which awaken admiration. Quick perceptions and ready invention are the peculiar attribute of some minds; others are endowed with great sagacity and wisdom in adapting the best means to accomplish the best ends; others possess an energy and force of purpose which enables them to encounter difficulties, sustain bodily fatigue, and even to face death without shrinking; others possess a power of forming new and varied combinations that gratify the taste; others seem to possess a readiness and versatility of mind which enables them to succeed in almost any object they undertake. The exhibition of any of these operations of intellect are causes of emotions of pleasure to other minds. The next quality of mind which is a cause of affection is the power of _sympathy_. There is nothing which so powerfully draws the mind toward another being as the assurance that all our pleasures will be his, and that "in all our afflictions he will be afflicted." It is probable that a being entirely destitute of this susceptibility, however he might excite the mind by displays of intellectual power, never could be regarded with the warm and tender emotions of affection. If we encountered a mind that we felt looked upon our happiness without one glimmering of pleasure, and who could gaze upon our sufferings without one shade of sympathizing woe, it is probable the mind would turn away with feelings of dissatisfaction or disgust.