On the Southwestern slope of Mount Parnassus is located the Temple of Apollo. It is near the modern town Delphi. Inscribed at the entrance is written "Γνῶθι σεαυτόν" which means, "Know thyself". Socrates made this profound phrase rather well known. Your post reminded me of this, which I visited once while reading through the complete works of Plato. Cheers.