I swear by the blood of Yggdrasil. And by the blood of my father, Odin Allfather, and by my hope of the bifrost reforged.

[He says is seriously, with great solemnity, with the gravity of a true oath. He may be a sheltered princeling, unaware of the many tensions between co-habiting people, but he does not want a race he considers allied with his to feel threatened. It is not right, and even at his worst, Thor at least tries to do what is right.]