There's a sense in which Marx does contribute to the fund of human knowledge, and we can no more dismiss him than we can [George] Hegel or [Jean-Jacques] Rousseau or [Baruch] Spinoza or [Charles] Darwin; you don't have to be a Darwinian to appreciate Darwin's views, and I don't have to be a Marxist to appreciate what is valid in a number of [Karl] Marx's writings-and Marx would call that a form of simple commodity production rather than capitalism.
There are people, of course, who profess to be libertarian Marxists. I believe they mean very well, and I even write in their periodicals; but I write very militantly that I regard Marxism as a very subtle form of what I would call the totalitarian ideology - all the more subtle because it professes to advance the notions of freedom.
My main interests right now are to publish, to write, to explicate various views which I hope have an impact on thinking people.
I learned that [Trotskyism] were no different from the Stalinists, and they expelled me, which is the typical Marxist-Leninist way of dealing with dissenters. From that point on, I migrated by the 1950s into anarchism, increasingly emphasizing decentralization. Also, I made the all-important step of bridging my social philosophy with ecology. I did that in 1952 and went on to write a whole series of books developing an anarcho-ecological approach.