“The partially emancipated human being who extends his moral sentiments to all the members of his own species, but denies to all other species the justice and humanity he accords to his own, is making on a larger scale the same ethical mess of it as the savage. The only consistent attitude, since Darwin established the unity of life (and the attitude we shall assume, if we ever become really civilised), is the attitude of universal gentleness and humanity.”
"The Ethics of Human Beings Toward Non-human Beings", p. 279
The Universal Kinship (1906), The Ethical Kinship
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J. Howard Moore 183
1862–1916Related quotes

“All human beings can alter their lives by altering their attitudes.”

Essays on Woman (1996), The Separate Vocations of Man and Woman According to Nature and Grace (1932)
Source: The Next Development in Man (1948), p. 251

" Ascribing Mental Qualities to Machines http://www-formal.stanford.edu/jmc/ascribing.html" (1979) Sect. 5.5: Free Will. Reprinted in Formalizing Common Sense: Papers By John McCarthy, 1990, ISBN 0893915351
1970s

1930s, Die verfluchten Hakenkreuzler. Etwas zum Nachdenken (1932)