Happiness is of two sorts, viz., physical and mental. The visible and invisible fruits of action, both this and the other world, are described for the sake of happiness. There is nothing more important than happiness among the fruits of the threefold objects of life. Happiness is desirable. It is an attribute of the Soul. Both virtue and Profit are sought for it. Virtue is its origin. This, indeed is its origin. The end of all acts is the attainment of happiness.