Source: Darwin, God and the Meaning of Life: How Evolutionary Theory Undermines Everything You Think You Know (2010), p. 274
“What exactly is the minority moral position for which members of a gathering such as this are likely to be propagandists? It will certainly differ slightly from person to person. There is, however, one rather minimal principle to which I trust that all here would assent, namely that the suffering or frustration of an animal of another species is an evil of the same general sort as is the suffering or frustration of a human being, and that we humans have the same general sort of moral obligation to refrain from causing, and to try actively to prevent, such evil when it concerns animals as when it concerns human beings.”
Source: The Animal Welfare Movement and the Foundations of Ethics, p. 89
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Timothy Sprigge 5
British philosopher 1932–2007Related quotes
" The Meat Eaters http://opinionator.blogs.nytimes.com/2010/09/19/the-meat-eaters/", The New York Times, 19 Sept. 2010
Source: The Animal Welfare Movement and the Foundations of Ethics, p. 87

" Speciesism https://books.google.it/books?id=Rz30CgAAQBAJ&pg=PT59" (1970). Reported in Speciesism, Painism and Happiness: A Morality for the Twenty-First Century by Richard D. Ryder (Exeter: Imprint Academic, 2011), Chapter 2.
"Saving the Rabbit from the Fox", p. 247
Morals, Reason, and Animals (1987)
Source: The Animal Welfare Movement and the Foundations of Ethics, p. 95

"The Reasons for My Involvement in the Peace Movement" (1972) http://www.shalomctr.org/node/61; later included in Moral Grandeur and Spiritual Audacity (1996)
Context: There is immense silent agony in the world, and the task of man is to be a voice for the plundered poor, to prevent the desecration of the soul and the violation of our dream of honesty.
The more deeply immersed I became in the thinking of the prophets, the more powerfully it became clear to me what the lives of the Prophets sought to convey: that morally speaking, there is no limit to the concern one must feel for the suffering of human beings, that indifference to evil is worse than evil itself, that in a free society, some are guilty, but all are responsible.

Dawkins on Q&A (), replying to a Muslim man who asked about 'absolute morality'. https://www.youtube.com/watch?v=mu7AQTs_y5A