“Nothing is a mistake. There’s no win and no fail, there’s only make.”
The list that I also like a lot, is Some Rules for Students and Teachers, attributed to John Cage but originating from artist and educator Sister Corita Kent, as part of a project for a class she taught in 1967-1968. It was popularized by Cage, Merce Cunningham and it appears in Stewart Brand’s cult-classic Essential Whole Earth Catalog.
Thanks to Tuomo Kangasmaa finding out this article.