A man's maturity consists in having found again the seriousness one had as a child, at play.Friedrich Nietzsche
Work consists of whatever a body is obliged to do. Play consists of whatever a body is not obliged to do.Mark Twain
In play, a child is always above his average age, above his daily behavior; in play, it is as though he were a head taller than himself.Lev Vygotsky
Play is often talked about as if it were a relief from serious learning. But for children play is serious learning. Play is really the work of childhood.Fred Rogers
It is paradoxical that many educators and parents still differentiate between a time for learning and a time for play without seeing the vital connection between them.Leo Buscaglia
A lack of play should be treated like malnutrition: it's a health risk to your body and mind.Stuart Brown