Circe warns him: the Sirens sing so beautifully that any sailor who hears them steers toward their voice and dies on the rocks. The shore is white with the bones of those who tried.
Odysseus’s solution is split. He has his crew plug their ears with beeswax and lash him to the mast — he wants to hear, but cannot be allowed to act. Pure curiosity, harnessed.
The song they sing is not what you’d expect. Not seduction, not promise. They sing his own kleos — the songs of Troy, his deeds, who he was. They offer to tell him the meaning of his own life. He thrashes against the ropes; the men row past.
The lesson is older than the poem: the most dangerous voice is the one telling you exactly the story you want to hear about yourself.