
On the "Ethics" https://powersmoothie.org/ethics/ page of his Power Smoothie website
" Humanity Even for Nonhumans http://www.nytimes.com/2009/04/09/opinion/09kristof.html", New York Times, 8 April 2009
On the "Ethics" https://powersmoothie.org/ethics/ page of his Power Smoothie website
Source: Making a Killing: The Political Economy of Animal Rights (2007), p. 2
Species Conservation in Managed Habitats: The Myth of Pristine Nature (2016), p. 51
Source: The Point of View of the Universe: Sidgwick and Contemporary Ethics (2017), p. 343
" 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.
making parents and teachers a subtype of animal trainers
Source: Darwin, God and the Meaning of Life: How Evolutionary Theory Undermines Everything You Think You Know (2010), p. 155
"Animal Liberation Is Human Liberation", in OpEdNews.com (11 December 2007) http://www.opednews.com/articles/opedne_mark_haw_071211_animal_liberation_is.htm
Source: William Johnson (1990), Rose-Tinted Menagerie, p. 10