And Then You Shall Be Lost Indeed

Tiresias prophesies for Odysseus in the Underworld:
I know you, Captain, all you want in this world is to see the honey light of your own home at last. But there is more trouble to come for you. Poseidon hates you and your way home is through him. He will make it hard for you yet. But if you can hold fast to restraint, there is some hope. You shall find yourself sailing past the Island of the Sun God. Helios, who sees all and hears everything. Helios, from whom nothing is hidden. See his many cattle, sacred to the world, they dapple his island slopes like banks of clouds. They are beautiful and they are holy. But Captain, let no one interfere with them, even if you're starving. If any man so much as touches them, everything will be taken from you, all your men, your last ship, everything. And then you shall be lost indeed, your fine mind will be useless against the fury of the sun.