“A human life the treasure of the world cannot buy; nor can it redeem one which is misspent; nor can it make full and complete and beautiful a life which is dwarfed and warped and ugly.”

“He was justifying his existence, than which life can do no greater; for life achieves its summit when it does to the uttermost that which it was equipped to do.”

“Oh!--and I speak out of later knowledge--Heaven forefend me from the most of the average run of male humans who are not good fellows, the ones cold of heart and cold of head who don't smoke, drink, or swear, or do much of anything else that is brase, and resentful, and stinging, because in their feeble fibres there has never been the stir and prod of life to well over its boundaries and be devilish and daring. One doesn't meet these in saloons, nor rallying to lost causes, nor flaming on the adventure-paths, nor loving as God's own mad lovers. They are too busy keeping their feet dry, conserving their heart-beats, and making unlovely life-successes of their spirit-mediocrity.”

“The pitch to which he was aroused was tremendous. All the fighting blood of his breed was up in him and surging through him. This was living., though he did not know it. He was realizing his own meaning in the world; he was doing that for which he was made.... He was justifying his existence, than which life can do no greater; for life achieves its summit when it does to the uttermost that which it was equipped to do.”

“There is an ecstasy that marks the summit of life, and beyond which life cannot rise. And such is the paradox of living, this ecstasy comes when one is most alive, and it comes as a complete forgetfulness that one is alive. This ecstasy, this forgetfulness of living, comes to the artist, caught up and out of himself in a sheet of flame; it comes to the soldier, war-mad in a stricken field and refusing quarter; and it came to Buck, leading the pack, sounding the old wolf-cry, straining after the food that was alive and that fled swiftly before him through the moonlight.”

“It was an old song, old as the breed itself - one of the first songs of the younger world in a day when songs were sad. It was invested with the woe of unnumbered generations, this plaint by which Buck was so strangely stirred. When he moaned and sobbed, it was with the pain of living that was of old the pain of his wild fathers, and the fear any mystery of the cold and dark that was to them fear and mystery. And that he should be stirred by it marked the completeness with which he harked back through the ages of fire and roof to the raw beginnings of life in the howling ages.”

“On the sled, in the box, lay a third man whose toil was over, - a man whom the Wild had conquered and beaten down until he would never move nor struggle again. It is not the way of the Wild to like movement. Life is an offense to it, for life is movement; and the Wild aims always to destroy movement.”