I heard this quote listening to “Reckless Daughter,” a biography of Joni Mitchell by David Yaffe. Arthur Krazman is cited as one of Joni’s early influences, an English teacher who recognized her talent and encouraged her to dig deeper. The quote – or the idea of it – supposedly originated with Frederich Nietzsche, but I could not find that reference. So Krazman gets the credit for this one.
H/T @AmySpeace for recommending the book. .