Snorri Sturluson,
Heimskringla — Saga of Olaf Herladson…
“ Erling replies to this, "I will answer at once. I deny altogether that I have ever injured Aslak, or any one else, for being in your service; but this I will not deny, that it is now, as it has long been, that each of us relations will willingly be greater than the other: and, moreover, I freely acknowledge that I am ready to bow my neck to thee, King Olaf; but it is more difficult for me to stoop before one who is of slave descent in all his generation, although he is now your bailiff, or before others who are but equal to him in descent, although you bestow honours on them." ”
