Drucker, who believed that the most effective managers look across a range of disciplines and draw on all of the humanities and sciences, would have loved Martin’s analysis. Indeed, it is said that a young person once asked Drucker how to excel as a manager. “Learn to play the violin,” he replied.
Emphasis mine. I found this reference to it. The appreciation and desire to understand a broad range of topics, to bring more context to everything else, is something I feel strongly about.