Snorri Sturluson,
Heimskringla — Saga of Hakon Herdebreid
“ Erling Skakke replied thus to the king's speech: "It is my duty, sire, not to be silent; and I shall give my advice, since it is desired. The resolution now adopted is contrary to my judgment; for I call it foolhardy to fight under these circumstances, although we have so many and such fine men. Supposing we make an attack on them, and row up against this river-current; then one of the three men who are in each half room must be employed in rowing only, and another must be covering with the shield the man who rows; and what have we then to fight with but one third of our men? ”
