What is the role of fate in Oedipus Rex?
To add to the superb answer above...
Fate all too often seems like some nebulous catch-all. An excuse. A scapegoat. Something unforeseen. Dramatic irony. All this commentary about "fate catching up with Oedipus," I think, is pandering nonsense.
Fate in Oedipus cannot be confused with punishment or suffering. Fate is not the Sphinx, or the plague, or suicide, or exile. This kind of analogy-making is non sequitir , faulty logic. To permit this is to negate humankind's responsibility and ability to rise above suffering. To place so much emphasis on fate diminishes the play as a whole....
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Oedipus Rex is one of the greatest creations of Sophocles where king Oedipus is the protagonist who is the victim of his own fate. Generally, fate is the development of events outside a person’s control, regarded as predetermined by a supernatural power. In Oedipus Rex, fate defeats three characters Oedipus, Jocasta and Laius.
The tragedy of Oedipus is cruel twist of fate. Oedipus is the real son of Theban king Laius. His parents are informed by an astrologer that Oedipus will kill his father and marry her mother. That is why; they tie his legs and give to a shepherd to leave him on a mountain so that the beasts of mountain eat him. It is the character of fate that saves him to die.
The shepherd takes pity to him and gives Oedipus to another shepherd of other country. The other shepherd gives Oedipus to his childless king Polybus. Polybus and his wife bring Oedipus up as their own son. When Oedipus is young enough, he hears from an oracle that he will kill his father and marry his mother. He thinks Polybus his father and do not want to kill him and runs away from this kingdom and reaches his real state. It is the creation of destiny that brings him to his own country.
On the way to his country, he kills an old king and his soldiers for simple matter. Actually, this old king is his father Laius. So, here the first prediction becomes true and fate wins and defeats the trying of man.
Oedipus defeats Sphinx and becomes the king of Thebes. The people of Thebes give their queen to him to marry because their king has been killed. Here, again fate wins and defeats trying of man. Here, fate proves that no man can deny his sorrow and suffering.
To know about future anxiously, can be cause of Oedipus’s tragedy. Oedipus is anxious to know about his future. An oracle forbids him to know about his fate but Oedipus insists to know about and says to oracle.
“Since come it must, thy duty is to tell me”
Know about future too much is not a good thing; it brings difficulties for a man as William Ernest Hentey says,
“Knowing too much of your future is never a good thing”
Oedipus tries his best to deny his fate and save him from the worse sin but he fails because his destiny bounds him to do so. Oedipus fails and fate wins. So the role of fate on Oedipus is almighty.