The Gauls have certain wise men and experts on the gods called Druids, as well as a highly respected class of seers. Through auguries and animal sacrifice these seers predict the future and no one dares to scoff at them. They have an especially odd and unbelievable method of divination for the most important matters. Having anointed a human victim, they stab him with a small knife in the area above the diaphragm. When the man has collapsed from the wound, they interpret the future by observing the nature of his fall, the convulsion of his limbs, and especially from the pattern of his spurting blood. In this type of divination, the seers place great trust in an ancient tradition of observation.
It is a custom among the Gauls to never perform a sacrifice without someone skilled in divine ways present. They say that those who know about the nature of the gods should offer thanks to them and make requests of them, as though these people spoke the same language as the gods. The Gauls, friends and foes alike, obey the rule of the priests and bards not only in time of peace but also during wars. It has often happened that just as two armies approached each other with swords drawn and spears ready, the Druids will step between the two sides and stop the fighting, as if they had cast a spell on wild beasts. Thus even among the wildest barbarians, anger yields to wisdom and the god of war respects the Muses.