Life is play.  In the lives of humans, there are two major types of play:  finite and infinite. Finite play is played for the purpose of winning. The purpose of infinite play is to continue playing.

Stuart Brown, a physician and director of the National Institute for Play, has said:  "Watching a young child immersed in play is a spiritual experience. And there is spirit emerging in the play of the child, something nonmaterial that's a part of it that is more than just ions zipping around in a nervous system."