Quality time is an informal reference to time spent with close family, partners or friends that is in some way important, special, productive or profitable. It is time that is set aside for paying full and undivided attention to the person or matter at hand. It may also refer to time spent performing some favorite activity.The word "love" can have a variety of related but distinct meanings in different contexts. Many other languages use multiple words to express some of the different concepts that in English are denoted as "love"; one example is the plurality of Greek words for "love" which includes agape and eros: The philosophy of love is a field of social philosophy and ethics that attempts to explain the nature of love. The philosophical investigation of love includes the tasks of distinguishing between the various kinds of personal love, asking if and how love is or can be justified, asking what the value of love is, and what impact love has on the autonomy of both the lover and the beloved. Many different theories attempt to explain the nature and function of love. Explaining love to a hypothetical person who had not himself or herself experienced love or being loved would be very difficult because to such a person love would appear to be quite strange if not outright irrational behavior. Among the prevailing types of theories that attempt to account for the existence of love are:psychological theories, the vast majority of which consider love to be very healthy behavior.