The Universal Kinship is a 1906 book by American zoologist, philosopher, educator and socialist J. Howard Moore. In the book, Moore advocated for a secular sentiocentric philosophy, called the "Universal Kinship", which mandated the ethical consideration and treatment of all sentient beings based on Darwinian principles of shared evolutionary kinship, and a universal application of the Golden Rule; a direct challenge to anthropocentric hierarchies and ethics. The book was endorsed by Henry S. Salt, Mark Twain and Jack London.
John Howard Moore (December 4, 1862 – June 17, 1916) was an American zoologist, philosopher, educator and socialist. He advocated for the ethical consideration and treatment of animals, and authored several articles, books, essays and pamphlets on ethics, vegetarianism, humanitarianism and education. He is best known for his work The Universal Kinship (1906), which advocated for a secular sentiocentric philosophy he called the doctrine of "Universal Kinship", based on the shared evolutionary kinship between all sentient beings.