Many thanks to @ImSporticus for including this post in his weekly round-up of re-posts — it generated quite a few comments.
This, from Phil Kearney: “As a means to move away from a “versus” mentality, I really like Whitehead’s description of freedom (play) and discipline (practice) as “…two rhythms, now one of which is louder, now the other, but both have a place at all stages in development”