The story of Achilles is among the more famous in Greek Mythology. In summary, to protect Achilles from the wrath of Zeus, he was made immortal by baptism in the river Styx. The whole of his body was protected except the part by which he was held and dipped into the water… his heel.
Achilles was later killed in battle by an arrow strike to that one vulnerable spot. This is why we have the term “Achilles heel” today, and this is what the Celtics must find if they are to slay the mythological beasts of today’s NBA… the undefeated Golden State Warriors.