What are Odysseus' strengths and weaknesses and how do they show on Helios' Island?

The events on Helios Island take place in Book 12 of the Oddyesy. 

Circe tells Odysseus that no one has heard to the 'song of the sirens' and lived. He uses guile, bravery and inventiveness, to pass through.

Circe also gives him instructions on how to return home. His ship must pass a monster, immovable rocks, or whirlpool. While Circe suggests sacrificing a small number of men, in order to pass the monster. Odysseus remains loyal to his crew, remaining indecisive as to the 'best' strategy.

Upon approaching the monster, Odysseus arms his men, preparing for a fight. This shows a brashness and reactive nature - remember he has been warned to pass quickly (leaving the sacrifices).

Circe's last warning was to avoid taking the cattle of Helios. In fact, he's been warned to stay away all together (several times). Despite this, and his crew wanting to mourn lost crew-mates, his curiosity, or sense of immortality, take him to the island.

Overall Odysseus comes across as a brave, risk taking, explorer. His crew are loyal, and together they have fought great foes. However, Odysseus seems to enjoy flirting with danger - routinely dismissing good advice, in order to test himself.