man …is only fully a human being when he plays.
— Friedrich Schiller, On the Aesthetic Education of Man: In a Series of Letters, 1795 (Thoemmes: Bristol, 1994), p. 107. “This moral function attributed to play owes much to Kant, who makes a distinction between crude ‘mere enjoyment’, excluded from his definition of the aesthetic, and ‘disinterested’ play.” Gavin Grindon, 2011