Synthesized answer
The central thesis of this text, "Fellow Creatures" by Christine Marion Korsgaard, is that it presents "a compelling new view of our moral relationships to the other animals" [Passage 1].
The provided passages indicate the book's focus on exploring and re-evaluating how humans ought to morally relate to non-human animals. However, the specific details of this "compelling new view" and its arguments are not elaborated upon in the given snippets. Therefore, while the book's core subject matter is clear, the precise nature of its central thesis remains incompletely detailed by these passages.
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
Title: Fellow Creatures by Christine Marion Korsgaard Description: Presents a compelling new view of our moral relationships to the other animals Categories: Nature Pages: 267 Snippet: Presents a compelling new view of our moral relationships to the other animals