It is not, in fact, very likely that any of you will be able, in the next ten years, to make any direct contribution to the peace or prosperity of Europe. You will be busy finding jobs, getting married, acquiring facts. I am going to do something more old-fashioned than you perhaps expected. I am going to give advice. I am going to issue warnings. Advice and warnings about things which are so perennial that no one calls them "current affairs."

In 1944, C.S. Lewis addressed the students of King's College, University of London with the annual Memorial Lecture.

... It is tiring and unhealthy to lose your Saturday afternoons: but to have them free because you don't matter, that is much worse.

[ Po Bronson mentions this in _What Should I Do With My Life?_ ]

The Inner Ring, by C.S. Lewis