In Sophocles' tragedy, Oedipus Rex, what is the basic flaw in Oedipus Rex, the hero?
Oedipus's flaw is said to be hubris. While the Greek word hubris is generally translated as pride, a better understanding of it suggests the relationship between humankind and the Pantheon (the gods). The concept that hubris describes is actually that of forgetting humankind's position in relation to the gods: humans are weak and limited while the gods are mighty and powerful.
Accordingly, Oedipus's flaw is that, being wise and powerful in his own right, he puts his trust in human knowledge and ability. This is a sort of pride, but pride in humanity rather than personal vain pride. This is born out when Oedipus berates and mistreats Teiresias, who is called the "voice of Apollo," as he rejects what Teiresias says to him.
Do you really think you can just speak out,
You most disgraceful of disgraceful men!
You’d move something made of stone to rage!
say things like this, and still remain unpunished?
So, Oedipus's basic flaw is hubris, which according to some is personal pride but according to other scholars is pride in humanity that supersedes acknowledgment of the gods' might. In other words, he tries to outsmart the prophecy for his destiny and in so doing thus becomes subject to the retribution the gods, or fate, hand down upon him.
Alas, alas! How dreadful it can be
to have wisdom when it brings no benefit
to the man possessing it. ....
What’s wrong? You’ve come, but seem so sad.
Let me go home. You must bear your burden
to the very end, ....