Full Idea
One might perhaps suppose that serious activity in childhood may have for its aim the amusement of the complete and adult man.
Gist of Idea
The aim of serious childhood play is the amusement of the complete adult
Source
Aristotle (Politics [c.332 BCE], 1339a30)
Book Reference
Aristotle: 'Politics', ed/tr. Sinclair,T.A. /Saunders,T. [Penguin 1992], p.462
A Reaction
It is very Aristotelian to have a concept of 'serious' childhood play. I doubt whether Nichomachus had much fun. Aristotle thinks the good amusement of adults is very important.