
Source: The Limits of Evolution, and Other Essays, Illustrating the Metaphysical Theory of Personal Ideaalism (1905), Human Immortality: its Positive Argument, p.295
Source: Better-World Philosophy: A Sociological Synthesis (1899), Individual Culture, pp. 274–275
Source: The Limits of Evolution, and Other Essays, Illustrating the Metaphysical Theory of Personal Ideaalism (1905), Human Immortality: its Positive Argument, p.295
Our Sexual Ethics http://www.utilitarian.org/texts/oursexethics.html (1936)
1930s
Steve Sapontzis, " Predation https://digitalcommons.calpoly.edu/cgi/viewcontent.cgi?article=1220&context=ethicsandanimals", Ethics and Animals, Vol. 5, Iss. 2, Art. 4 (1984), p. 36
Die Fackel no. 445/53 (18 January 1917)
Die Fackel