(addressing Columbia's Class of 1959 at their 1999 reunion): "Despite
the abrupt caesura in my academic career that occurred in 1959, I have
gone on teaching the humanities almost continually to students of all
kinds and ages... I remind you that according to Aristotle, happiness
is not a feeling or sensation but instead is the quality of a whole
life. The emphasis is on 'whole,' a life from beginning to end.
Especially the end."