If there is an obvious theme in the Odyssey, what is it?
I would say the most prevalent theme in The Odyssey is the relationship between father and son and the inevitable maturation/development of both. Seeing the two men from Book 1 to 24 proves major changes and significant character development. Telemachus goes from boy to man, from very timid and shy to ready to rule the country while Odysseus himself goes from rash and arrogant to calculated and humble. Together, their relationship develops from estranged family to unstoppable team.