That Certainty Thing
As the sacred center of Greek society, the Temple of Apollo at Delphi has long represented the core of European thought. Everyone in Europe and its many colonies knows the first of the injunctions written on the temple’s wall:
γνῶθι σεαυτόν (gnōthi seautón, ”know thyself”)
Wise and difficult words if ever there were wise and difficult words. And, oh, my, how the ancient philosophers ran with that ball.