> Joe was an absolute genius and an extremely kind person. I had the honor of meeting him once. Completely agree. Joe was always willing to reply to my emails

> Joe was an absolute genius and an extremely kind person. I had the honor of meeting him once. Completely agree. Joe was always willing to reply to my emails and answer my questions in detail. He was an exceptionally talented explainer, and his messages were always interesting and entertaining, while also being informative. I never met him in person but I will always treasure the correspondence I had with him.