Perhaps I am a bit thick but what is this essay really all about, apart from Sells usual confusions.
Meanwhile these two references provide an all-inclusive Understanding of our relationship, and moral responsibilities to the non-human inhabitants of this mostly non-human world.
http://www.openfield.earth
http://www.sacredforests.earth

Yes, Daffy you are a bit thick.

There used to be some graffiti in Fitzroy that said" All you Christians who really believe go to the Baachus Marsh African Lion Park and test your beliefs". I think this writer could ponder on this a bit too.

Excellent article; beautifully written, challenging to anyone interested in the nature of moral and political argument - worth reading again and thinking about. Max Atkinson

Ho hum. Unfalsifiable = drivel.

If a rational system of ethics is not possible, then there's no point talking about it, is there?

Argument presupposes certain things; for example you cannot argue that you cannot argue. This, and the radical fact of scarcity, enables a rational ethics, because it enables ethical propositions that you either agree with, or must perform a self-contradiction to deny.

“The Economics and Ethics of Private Property” by Hans-Hermann Hoppe
https://mises.org/system/tdf/Economics%20and%20Ethics%20of%20Private%20Property%20Studies%20in%20Political%20Economy%20and%20Philosophy_3.pdf?file=1&type=document

Peter, I challenge you - and anyone - to deny Hoppe's argument without self-contradiction.