He further said on the commune: "those who advocated any type of communism with connected property, interests, and responsibilities were doomed to failure because of the individuality of the persons involved in such an experiment."
https://en.wikipedia.org/wiki/Josiah_Warren#Owenism_and_New_Harmony
I find folks like Warren and Owen fascinating the more I read about them.
What did the "horrible" c-word mean in those days? Was it the same classless, stateless, moneyless, utopian society that it's usually described as now?
Followup question, how often was the word communism used to describe this before the publication of The Communist Manifesto?
Pre-marxist communism was a fairly diverse movement which included men of vast property hoping to practically implement a better way of living, philosophical fiction writers who lead relatively non-radical lives, and classic downtrodden proles looking to organize. It was fairly ideologically diverse, but centered around the idea of societies organized by cooperative relationships. Some of it was heavily steeped in other intellectual / scientific fads, including very strange ideas of essentially brainwashing the competitive selfishness out of people.
Marx is credited with inventing a large number of critical concepts not just in communist theory, but also more generally in economics, sociology, anthropology, and history. It's safe to say that nobody's understanding of communism in 1820 would have been quite like a modern understanding, because they wouldn't have his historical materialist methodology, or his particular understanding of exploitation of the proletariat by using strict arrangements to capture surplus value, or many of his insights into the flaws of a capitalist system.