Well a random wild-goose chase to get to the bottom of that quote led me to this, and I'm glad it did!
http://www.laphamsquarterly.org/sports-games/learning-master
The final two paragraphs are amazing.
Contributor
Norman Maclean
From “‘Billiards Is a Good Game’: Gamesmanship and America’s First Nobel Prize Scientist.” Maclean’s father taught his two sons the Bible and how to fish, a pedagogy alluded to in the opening sentence of the titular novella of his only completed book, A River Runs Through It—“In our family, there was no clear line between religion and fly fishing.” Having devoted most of his life to teaching Romanticism and Shakespeare, Maclean died at the age of eighty-seven in 1990.
nice one, sir