Silvertip Mountain I wonder if I've been changed in the night

"you must undergo a good deal of hurt. when your flesh is cut, you do not at first feel it. there is only you and the battle. it is not until after that the agony comes and you realize you are bleeding."
his single eye roved over arielle's attentive young face. "you learn to hold that moment and expand it until you are numb."
he could explain it in no other way. a bear-warrior, beserking for the blood of those who did not honor ursus.