QUOTE : We are proposing that the concepts that occur in metaphorical definitions are those that correspond to natural kinds of experience. Judging by the concepts that are defined by the metaphors we have uncovered so far, the following would be examples of concepts for natural kinds of experience in our culture: LOVE, TIME, IDEAS, UNDERSTANDING, ARGUMENTS, LABOR, HAPPINESS, HEALTH, CONTROL, STATUS, MORALITY, etc. These are concepts that require metaphorical definition, since they are not clearly enough delineated in their own terms to satisfy the purposes of our day-to-day functioning.