When we reflect upon the brutal vices of these salt-water bandits, pirates as shameful as any whom the sea has borne, or recoil from their villainous destruction and cruel deeds, we must also remember the discipline, the fortitude, the comradeship and martial virtues which made them at this period beyond all challenge the most formidable and daring race in the world.

On The Vikings, Vol I; The Birth of Britain. - A History of the English-Speaking Peoples (1956–58)