  The article is a recollection of the memorable experience of attending a
course on Quantum Mechanics given by Feynman in Brasil, as well as several
meetings and exchanges Daniele Amati and I had with him over many years, in
both the U.S. and Europe. The article also includes a small sample of the
problems assigned in the course, a one-page guide, hand-written by Feynman, to
study QED on the basis of two of his most important papers, and his reply to a
letter of congratulations that the author had sent to him on the occasion of
his Nobel Prize Award.
