"She was thrilling to a desire that urged her to go forward, to be in closer to that fire, to be squabbling with the dogs, and to be avoiding and dodging the stumbling feet of men."

"The more he studied, the more vistas he caught of fields of knowledge yet unexplored, and the regret that days were only twenty-four hours long became a chronic complaint with him."

"Limited minds can recognize limitations only in others."

"There is such a thing as anesthesia of pain, engendered by pain too exquisite to be borne."

"They were firemakers! They were gods! [humans]"

"Much of the Wild had been lost, so that to them the Wild was the "unknown", the terrible, the ever menacing and ever warring. But to him, in appearance and action and impulse, still clung the Wild."

"He was not immoral, but merely unmoral."

"Is love so gross a thing that it must feed upon publication and public notice ? It would seem so."

"You can’t wait for inspiration. You have to go after it with a club."

"His bondage had softened him. Irresponsibility had weakened him. He had forgotten how to shift for himself. The night yawned about him."

"For the pride of trace and trail was his, and sick unto death, he could not bear that another dog should do his work."

"He was quick and alert in the things of life, but only in the things, and not in their significances."

"The human race is doomed to sink back farther and farther into the primitive night ere again it begins its bloody climb upward to civilization."

"I do not live for what the world thinks of me, but for what I think of myself."

"Pray do not interrupt me," he wrote. "I am smiling."

"...in his gambling, he had one besetting weakness -- faith in a system; and this made his damnation certain."

"Life is not a matter of holding good cards, but sometimes playing a poor hand well."

"The proper function of man is to live, not to exist."

"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."

"Every book was a peep-hole into the realm of knowledge. His hunger fed upon what he read, and increased."

"Thus it was that in obedience to the law laid down by his mother, and in obedience to the law of that unknown and nameless thing, fear, he kept away from the mouth of the cave."

"The press of the United States? It is a parasitic growth that battens on the capitalist class. Its function is to serve the established by moulding public opinion, and right well it serves it."

"But the Wild is the Wild, and motherhood is motherhood, at all times fiercely protective whether in the Wild or out of it."

"He had killed man, the noblest game of all, and he had killed in the face of the law of club and fang."