Alan Watts on Running as Play and Dance! - 1970
Alan Wilson Watts (6 January 1915 – 16 November 1973), a British philosopher, writer, and speaker, best known as an interpreter and popularizer of Eastern philosophy for a Western audience, talks about running for joy vs. work, running on ball of foot rather than heel, running as play. Surely he'd be a Lunar Monkey if he were alive today!
You can learn a lot from his perspective on the Universe.