“The playing adult steps sideward into another reality; the playing child advances forward to new stages of mastery.”— Erik H. Erikson
“Play is a voluntary activity or occupation executed within certain fixed limits of time and place, according to rules freely accepted but absolutely binding.”— Johan Huizinga
“This is the real secret of life -- to be completely engaged with what you are doing in the here and now. And instead of calling it work, realize it is play.”— Alan Watts
“The secret of turning work into play, as seems to have been known to Tom Sawyer, is to make it voluntary.”— Bob Black