Boy, that really struck home when I read it the first time many years ago, and each time since.
In contrast, I see fledgling art students come to their first class or workshop outfitted to the teeth. They've researched and bought the best. The best easels, best brushes (I could eat for three months on what some of those brushes cost), the best paints and a shiny new spirits can with the clamp-on lid. And they've never painted anything yet! I sometimes wonder if they think the expensive supplies will paint the painting FOR them.