Harry Gordon Frankfurt (May 29, 1929 – July 16, 2023) was an American philosopher. He was a professor emeritus of philosophy at Princeton University, where he taught from 1990 until 2002. Frankfurt also taught at Yale University, Rockefeller University, and Ohio State University. Frankfurt made significant contributions to fields like ethics and philosophy of mind. **Source**: [Harry G. Frankfurt](https://en.wikipedia.org/wiki/Harry_Frankfurt) on Wikipedia.