William M. Calder III, "The Refugee Classical Scholars in the USA: An Evaluation of their Contribution,"
Illinois Classical Studies
17.1 (Spring, 1992) 153-173 (at 163):
Sir Kenneth Dover has remarked that what was most memorable for
him about Eduard Fraenkel was the great seriousness with which Fraenkel
took the calling of scholar. This was precisely my experience with Werner
Jaeger at Harvard (1952-56). He remarked to me when I was 19 years old:
"The trouble with American classical scholars is that they are only
classicists from 9:00 am until 5:00 pm five days a week. One must always
be a scholar, every moment of one's life."
Hat tip: Alan Crease.