Tiresias:
So, you mock my blindness? Let me tell you this.
You with your precious eyes,
you’re blind to the corruption of your life,
to the house you live in, those you live with –
who are your parents? Do you know? All unknowing
You are the scourge of your own flesh and blood,
the dead below the earth and the living here above,
and the double lash of your mother and your father’s curse
will whip you from this land one day, their footfall
treading you down in terror, darkness shrouding
your eyes that now can see the light!

Sophokles; Oedipus the King
Line 469