"No art or learning is to be pursued halfheartedly," His Highness replied, "but each has its professional teachers, and any art worth learning will certainly reward more or less generously the effort made to study it. It is the art of the brush and the game of Go that most startlingly reveal natural talent, because there are otherwise quite tedious people who paint or play very well, almost without training."
January 1, 1970
https://en.wikiquote.org/wiki/Go_(game)