Justice
"...we hold to the belief that the man who passes the sentence should swing the sword. If you would take a man's life, you owe it to him to look into his eyes and hear his final words. And if you cannot bear to do that, then perhaps the man does not deserve to die."
A Game of Thrones - GRR Martin pg. 16 (paperback)
The Song of Ice and Fire is an amazing book. GRR Martin writes with such vivid detail and soul that you can feel everything that transpires on the page. If you have not read them I can not recommend them enough.
Book 1: Game of Thrones
Book 2: A Clash of Kings
Book 3: Storm of Swords
Book 4: "coming soon"