Final answer:
Achilles, a Greek hero, was willing to sacrifice for the sake of his pride. However, his pride caused his downfall by leading to his refusal to fight in the Trojan War and resulting in great losses for the Greeks.
Step-by-step explanation:
Achilles, one of the greatest Greek heroes, was known for his actions and interactions with others. He was willing to sacrifice for the sake of his pride, as seen in his refusal to fight for the Greek army after his honor was insulted by Agamemnon. This decision resulted in great losses for the Greeks in battle.
Achilles's pride caused his downfall because it led to his refusal to participate in the Trojan War, which was detrimental to the Greek cause. His absence allowed Hector, the Trojan prince, to gain an advantage and put the Greeks at a disadvantage.
Additionally, Achilles's pride led to his eventual death. Despite being warned that he would die if he fought in the war, Achilles decided to join the battle after his close friend Patroclus was killed by Hector. This decision ultimately led to Achilles' own death at the hands of Paris.