Bill and Melinda Gates on investing The best investment any of us can ever make is in the lives of others.Bill and Melinda Gates This quote is from Bill and Melinda Gates’ 2017 annual letter to Warren Buffet on the “impact his gift has had on the world.” It’s well worth a read. By Brent Logan Engineer. Lawyer. WordPress geek. Longboarder. Blood donor. Photographer. More about Brent. View all of Brent Logan's posts.