Bless this man. He was a wonderful teacher to me. He opened up the great tool of calculus to me. He saw potential in me which I think and hope I lived up to but I never got back to him in the several decades that have passed to relay to gim how he fulfilled such great potential as a math teacher in gifting knowledge to so many, as always, in his dedicated service to us all , to humanity really. On your way, you saintly man, you!