"Truth is one; the sages just speak of it in different ways."
I read Rothbard's history of economic thought (the first volume, at least) around two years ago... I don't think I've read very many Austrians take on the history of economic thought since. It's honestly made me lose confidence in what I read -- it's hard for me to take a lot of criticisms of other ideas seriously, when I can't even be sure that the criticism attacks the actual idea. Salerno's recent post on free banking solidifies this fear.