Alucard: "The bird of Hermes is my name, eating my wings to make me tame."
Toguro Ototo: "Not even the best of contracts justifies killing as cruelly as I've just done. I apologize to this creature."
Pain/Nagato: "The world will know true pain, and the fear of that pain will put an end to war... It will lead the world to stability and peace."
Kagome: "Sit!"