These men were terrified in their hearts lest the whole army with the king should perish through toil, lack of food, and the fury of the Poles. Old Wittemberg advised the king directly against the campaign: “How will you go, O King,” said he, “to the Russian regions after an enemy who destroys everything on the way, but is unseen himself? What will you do if horses lack not only hay, but even straw from the roofs of cottages, and men fall from exhaustion? Where are the armies to come to our aid, where are the castles in which to draw breath and rest our weary limbs? My fame is not equal to yours; but were I Karl Gustav, I would not expose that glory acquired by so many victories to the fickle fortune of war.” To which Karl Gustav answered: “And neither would I, were I Wittemberg.” Then he mentioned Alexander of Macedon, with whom he liked to be compared, and marched forward, pursuing Charnyetski. Charnyetski, not having forces so great nor so well trained, retreated before him, but retreated like a wolf ever ready to turn on his enemy. Sometimes he went in advance of the Swedes, sometimes at their flanks, and sometimes in deep forests he let them go in advance; so that while they thought themselves the pursuers, he, in fact, was the hunter. He cut off the unwary; here and there he hunted down a whole party, destroyed foot-regiments marching slowly, attacked provision-trains. The Swedes never knew where he was. More than once in the darkness of night they began to fire from muskets and cannons into thickets, thinking that they had an enemy before them. They were mortally wearied; they marched in cold, in hunger, in affliction, and that _vir molestissimus_ (most harmful man) hung about them continually, as a hail-cloud hangs over a grain-field.