The Voice is a popular televised singing competition on NBC. The finale of its sixth season aired last night, and the winner is Josh Kaufman, who took part in the competition while taking a break from pursuing his master’s degree in philosophy at Northern Illinois University. You can watch Mr. Kaufman talking about his philosophy studies here, and see him singing Stevie Wonder’s “Signed, Sealed, Delivered,” which may or may not have been about his master’s thesis.