On one level, last night's Game of Thrones was about parents and their damaged sons. (Along with the age-old maxim, "You broke it, you bought it.") But really, it was about offering one plausible answer to the question the show has been asking from the beginning: Where does power come from? Who really has it, and why?
That question about the sources of power is at the epicenter of the show because it comes straight from the source material, George R.R. Martin's books. It's spelled out, in particular, in the riddle that Varys poses to Tyrion, about the swordsman who has to choose between killing for money, loyalty to the crown or religion.