John “Mac” McQuown’s first claim to fame was creating one of the original S&P 500 index funds in the early 1970s. In an advisor-only video interview he conducted with David Booth about his work in evidence-based investing, Mac says:

“What I knew then, and I know now, is that this set of ideas is compelling. And sooner or later the world is going to come around to seeing the validity of this form of investing.”

He continues his work to this day and even holds a seat on Dimensional’s board of directors. He was recently labeled by Bloomberg magazine as the “80-year-old whiz kid” for his work reinventing the corporate bond. Watch the video below for more.