Talk:Ethical extensionism

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I don't think the term ethical extensionism was coined by Des Jardins in an introductory textbook. I suspect it may have been J. Baird Callicott. I believe the argument he uses to justify Aldo Leopold's land ethic would qualify as extensionism (and IIRC, he abandoned the position as untenable). If I can find a copy of In Defense of the Land Ethic, I may check it out. Whitejay251 23:26, 27 December 2009 (UTC)

The term extensionism is used by Roderick Nash in his 1989 book The Right of Nature. — Preceding unsigned comment added by Thomp649 (talk • contribs) 22:17, 29 November 2020 (UTC)