Answer: Out of all the literary works listed above, The Odyssey seems portray the "struggle" of finding home. Odysseus travels all over in the story, spending most of the story away from home. While he is on his journey, he longs to be back home. And it's not just Odysseus that feels this way. While Odysseus is on his voyage, his mother back home literally dies from a broken heart, waiting on him to return.
Out of all the epics/stories listed above, Oedipus Rex portrays grief the best. In Oedipus Rex, Oedipus is considered hero of the village, because he solved the sphinx's riddle, saving the citizens from the sphinx. however, Oedipus has been cursed by the gods from birth. He was cursed to kill his father, and marry his mother. When his biological parents hear this news, they cast Oedipus out as a infant, and he grows up never knowing his biological parents.
When Oedipus eventually hears this news, he runs away from his homeland, with the hope of avoiding the curse. While he is running away from his homeland, he runs into his biological father, and kills him in a chariot crash. He then unknowingly marries his mother, and they rule as king and queen. He then finds out he has fulfilled his curse, and he stabs his eyes out; because he no longer wants to see the truth. His mother also hangs herself, adding to the already tragic ending.
And finally, Julius Caesar best portrays the human struggle of honor. In Julius Caesar, Brutus murders Caesar trying to save Rome from Caesar's dictatorship. Ironically, what this really ends up doing, is making Rome much, much worse. Because Brutus idolized honor so much, it kept him from realizing murdering Caesar was the worst thing he could possibly for Rome.
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