“He had been suddenly jerked from the heart of civilization and flung into the heart of things primordial.”

“He had learned well the law of club and fang, and he never forewent an advantage or drew back from a foe he had started on the way to Death. He had lessoned from Spitz, and from the chief fighting dogs of the police and mail, and knew there was no middle course. He must master or be mastered; while to show mercy was a weakness. mercy did not exist in the primordial life. It was misunderstood for fear, and such misunderstandings made for death. Kill or be killed, eat or be eaten, was the law; and this mandate, down out of the depths of Time, he obeyed.”

“The dominant primordial beast was strong in Buck”

“Growl he would, from the moment the petting began till it ended. But it was a growl with a new note in it. A stranger could not hear this note, and to such a stranger the growling of White Fang was an exhibition of primordial savagery, nerve–racking and blood–curdling. But White Fang's throat had become harsh–fibred from the making of ferocious sounds through the many years since his first little rasp of anger in the lair of his cubhood, and he could not soften the sounds of that throat now to express the gentleness he felt.”

“Wolf - tis what he is. He's not blackhearted like some men. 'Tis no heart he has at all.”

“He was a ferocious man. He had been ill-made in the making. He had not been born right, and he had not been helped any by the molding he had received at the hands of society. The hands of society are harsh, and this man was a striking sample of its handiwork. He was a beast - a human beast, it is true, but nevertheless so terrible a beast that he can best be characterized as carnivorous.”

“His conclusion was that things were not always what they appeared to be. The cub's fear of the unknown was an inherited distrust, and it had now been strengthened by experience. Thenceforth, in the nature of things, he would possess an abiding distrust of appearances.”