Speciesism is a term used in philosophy regarding the treatment of individuals of different species. The term has several different definitions. Some specifically define speciesism as discrimination or unjustified treatment based on an individual's species membership, while others define it as differential treatment without regard to whether the treatment is justified or not. Richard D. Ryder, who coined the term, defined it as "a prejudice or attitude of bias in favour of the interests of members of one's own species and against those of members of other species". Speciesism results in the belief that humans have the right to use non-human animals in exploitative ways which is pervasive in the modern society. Studies from 2015 and 2019 suggest that people who support animal exploitation also tend to have intersectional bias that encapsulates and endorses racist, sexist, and other prejudicial views, which furthers the beliefs in human supremacy and group dominance to justify systems of inequality and oppression.
Anthropocentrism is the belief that human beings are the central or most important entity on the planet. The term can be used interchangeably with humanocentrism, and some refer to the concept as human supremacy or human exceptionalism. From an anthropocentric perspective, humankind is seen as separate from nature and superior to it, and other entities are viewed as resources for humans to use.
Henry Shakespear Stephens Salt was a British writer and campaigner for social reform in the fields of prisons, schools, economic institutions, and the treatment of animals. He was a noted ethical vegetarian, anti-vivisectionist, socialist, and pacifist, and was well known as a literary critic, biographer, classical scholar and naturalist. It was Salt who first introduced Mohandas Gandhi to the influential works of Henry David Thoreau, and influenced Gandhi's study of vegetarianism. Salt is considered, by some, to be the "father of animal rights", having been one of the first writers to argue explicitly in favour of animal rights, rather than just improvements to animal welfare, in his book Animals' Rights: Considered in Relation to Social Progress (1892).
Evolutionary ethics is a field of inquiry that explores how evolutionary theory might bear on our understanding of ethics or morality. The range of issues investigated by evolutionary ethics is quite broad. Supporters of evolutionary ethics have argued that it has important implications in the fields of descriptive ethics, normative ethics, and metaethics.
Animal rights is the philosophy according to which many or all sentient animals have moral worth independent of their utility to humans, and that their most basic interests—such as avoiding suffering—should be afforded the same consideration as similar interests of human beings. Broadly speaking, and particularly in popular discourse, the term "animal rights" is often used synonymously with "animal protection" or "animal liberation". More narrowly, "animal rights" refers to the idea that many animals have fundamental rights to be treated with respect as individuals—rights to life, liberty, and freedom from torture that may not be overridden by considerations of aggregate welfare.
The Humanitarian League was a British radical advocacy group formed by Henry S. Salt and others to promote the principle that it is wrong to inflict avoidable suffering on any sentient being. It was based in London and operated between 1891 and 1919.
The concept of moral rights for animals is believed to date as far back as Ancient India, particularly early Jainist and Hindu history. What follows is mainly the history of animal rights in the Western world. There is a rich history of animal protection in the ancient texts, lives, and stories of Eastern, African, and Indigenous peoples.
Gary Steiner is an American moral philosopher, and the John Howard Harris Professor of Philosophy at Bucknell University. Steiner's particular focus is animal rights, Descartes, and 19th- and 20th-century continental philosophy.
Alasdair Cochrane is a British political theorist and ethicist who is currently Professor of Political Theory in the Department of Politics and International Relations at the University of Sheffield. He is known for his work on animal rights from the perspective of political theory, which is the subject of his two books: An Introduction to Animals and Political Theory and Animal Rights Without Liberation. His third book, Sentientist Politics, was published by Oxford University Press in 2018. He is a founding member of the Centre for Animals and Social Justice, a UK-based think tank focused on furthering the social and political status of nonhuman animals. He joined the Department at Sheffield in 2012, having previously been a faculty member at the Centre for the Study of Human Rights, London School of Economics. Cochrane is a Sentientist. Sentientism is a naturalistic worldview that grants moral consideration to all sentient beings.
John Hadley is an Australian philosopher whose research concerns moral and political philosophy, including animal ethics, environmental ethics, and metaethics. He is currently a senior lecturer in philosophy in the School of Humanities and Communication Arts at Western Sydney University. He has previously taught at Charles Sturt University and the University of Sydney, where he studied as an undergraduate and doctoral candidate. In addition to a variety of articles in peer-reviewed journals and edited collections, he is the author of the 2015 monograph Animal Property Rights and the 2019 monograph Animal Neopragmatism. He is also the co-editor, with Elisa Aaltola, of the 2015 collection Animal Ethics and Philosophy.
John Howard Moore was an American zoologist, philosopher, educator, and social reformer. He was best known for his advocacy of ethical vegetarianism and his pioneering role in the animal rights movement, both deeply influenced by his ethical interpretation of Darwin's theory of evolution. Moore's most influential work, The Universal Kinship (1906), introduced a sentiocentric philosophy he called the doctrine of Universal Kinship, arguing that the ethical treatment of animals, rooted in the Golden Rule, is essential for human ethical evolution, urging humans to extend their moral considerations to all sentient beings, based on their shared physical and mental evolutionary kinship.
Charles Russell Magel was an American philosopher, animal rights activist and bibliographer. He was professor emeritus of Philosophy and Ethics at Moorhead State University.
Why I Am a Vegetarian is an 1895 pamphlet based on an address delivered by J. Howard Moore before the Chicago Vegetarian Society. It was reprinted several times by the society and other publishers.
The predation problem or predation argument refers to the consideration of the harms experienced by animals due to predation as a moral problem, that humans may or may not have an obligation to work towards preventing. Discourse on this topic has, by and large, been held within the disciplines of animal and environmental ethics. The issue has particularly been discussed in relation to animal rights and wild animal suffering. Some critics have considered an obligation to prevent predation as untenable or absurd and have used the position as a reductio ad absurdum to reject the concept of animal rights altogether. Others have criticized any obligation implied by the animal rights position as environmentally harmful.
The relationship between animal ethics and environmental ethics concerns the differing ethical consideration of individual nonhuman animals—particularly those living in spaces outside of direct human control—and conceptual entities such as species, populations and ecosystems. The intersection of these two fields is a prominent component of vegan discourse.
Moral Inquiries on the Situation of Man and of Brutes is an 1824 book by Lewis Gompertz, an early animal rights advocate and vegan. The book argues that animals, like humans, are sentient beings capable of experiencing pain and pleasure, and thus deserve moral consideration. He critiques the exploitation of animals for labour, food, and clothing, condemning practices such as slaughter, hunting, and scientific experimentation. He also addresses the suffering of wild animals, suggesting that even in nature, animals face hardships such as hunger and predation.
Evolutional Ethics and Animal Psychology is an 1897 book by the American scholar and early animal rights advocate Edward Payson Evans. It is an in-depth exploration of the intersection between ethical theory and animal psychology, with a particular focus on the rights of animals and the moral obligations humans have toward them.
The New Ethics is a 1907 book by the American zoologist and philosopher J. Howard Moore, in which he advocates for a form of ethics, that he calls the New Ethics, which applies the principle of the Golden Rule—treat others as you would want to be treated yourself—to all sentient beings. It builds upon the arguments made in his 1899 book, Better-World Philosophy, and 1906 book, The Universal Kinship.
Moral circle expansion is an increase over time in the number and type of entities given moral consideration. The general idea of moral inclusion was discussed by ancient philosophers and since the 19th century has inspired social movements related to human rights and animal rights. Especially in relation to animal rights, the philosopher Peter Singer has written about the subject since the 1970s, and since 2017 so has the think tank Sentience Institute, part of the 21st-century effective altruism movement. There is significant debate on whether humanity actually has an expanding moral circle, considering topics such as the lack of a uniform border of growing moral consideration and the disconnect between people's moral attitudes and their behavior. Research into the phenomenon is ongoing.
Better-World Philosophy: A Sociological Synthesis is an 1899 book by American zoologist and philosopher J. Howard Moore. The book explores the nature of human desires, the challenges of industry, and the complex interactions between individuals and society. Moore structures his work into several chapters, each addressing different aspects of the human condition, societal organisation, and the relationship between humans and other sentient beings, particularly animals. He advocates for a deeper understanding of universal laws and promotes a more ethical and harmonious approach to social organisation, emphasizing the humane treatment of all sentient beings.
