Might Is Right or The Survival of the Fittest is a book by pseudonymous author Ragnar Redbeard, generally believed to be a pen name of Arthur Desmond.

[citation needed] The author sums up his work as follows: This book is a reasoned negation of the Ten Commandments—the Golden Rule–the Sermon on the Mount—Republican Principles—Christian Principles—and "Principles" in general.

It proclaims upon scientific evolutionary grounds, the unlimited absolutism of Might, and asserts that cut-and-dried moral codes are crude and immoral inventions, promotive of vice and vassalage.

Friedrich Nietzsche's theories of master–slave morality and herd mentality served as inspirations for Redbeard's book which was written contemporaneously.

[5] S. E. Parker writes in his introduction to the text: "The most likely candidate is a man named Arthur Desmond who was red-bearded, red-haired and whose poetry was very similar to that written by Redbeard.

"[5] The Bulletin, a journal associated with the Australian labour movement, reported in July 1900 that Desmond (a former contributor to the publication) was Ragnar Redbeard.

[6][7] The Church of Satan founder Anton LaVey and white supremacist publisher Katja Lane (wife of The Order member David Lane) both believed novelist Jack London was substantially involved, if not the author of the entire book; the latter based her judgment on London's distinctive grammar and punctuation.

: The substance of this book, as it is expressed in the editor's preface, is that to measure "right" by the false philosophy of the Hebrew prophets and "weepful" Messiahs is madness.

In particular, he criticized the inconsistency of the book's central dogma of individualism with its open sexism and racism (both requiring a membership in a collective).