Note 2 — Chapter IV · A BERSERKER.
Daniel De Leon translation
"During these disastrous times [the Northman wars] the serf became free, the free man became reduced to the estate of serf; they made a valet of the lord, and a lord of the valet."—Abbon, Siege of Paris by the Northmans, Vol. I, p. 5. Collected History of France.