Every serious man in dealing with really serious subjects carefully avoids writing. ... There does not exist, nor will there ever exist, any writing of mine dealing with this subject.
PlatoWhen you swear, swear seriously and solemnly, but at the same time with a smile, for a smile is the twin sister of seriousness.
PlatoHe who is only an athlete is too crude, too vulgar, too much a savage. He who is a scholar only is too soft, to effeminate. The ideal citizen is the scholar athlete, the man of thought and the man of action.
Plato