Perhaps the greatest charm of tramp-life is the absence of monotony. In Hobo Land the face of life is protean—an ever changing phantasmagoria, where the impossible happens and the unexpected jumps out of the bushes at every turn of the road. The hobo never knows what is going to happen the next moment; hence, he lives only in the present moment. He has learned the futility of telic endeavor, and knows the delight of drifting along with the whimsicalities of ChanceJack London – The Road
London witnessed animal cruelty in the training of circus animals, and his subsequent novels Jerry of the Islands and Michael, Brother of Jerry included a foreword entreating the public to become more informed about this practice.
In 1918, the Massachusetts Society for the Prevention of Cruelty to Animals and the American Humane Education Society teamed up to create the Jack London Club, which sought to inform the public about cruelty to circus animals and encourage them to protest this establishment. Support from Club members led to a temporary cessation of trained animal acts at Ringling-Barnum and Bailey in 1925.