Well, most of the other sources would hate that I think there's something to get out of Marx too! Jim Grant is about as hardcore libertarian as you can get. The longer I watch and trade markets the more I see the value of ideological flexibility and being able to synthesize many different and even contradictory perspectives.

I kind of agree with what you're saying. But my impression is that Marx is outdated and oftentimes incorrect.

What I'm basically looking for are people who are most insightful, correct, thought-provoking, knowledgeable and not very ideological.