Interesting! I'm planning on doing a module next semester on the history of economics and economic thought; it's something I've been trying to get into for a while. Anny suggested reading you have would be appreciated. I think there's a very strong link between economic theory and the behaviour of people which is quite intangible - I'm certain that, to some degree, modelled economic principles affect the way people think in a sort of "does art resemble life, or life resemble art" paradox. An example of this might be: why do we personify the economy? Discuss it as being weak, strong, healthy or otherwise; and when did the economy, however defined, become more important than welfare or morality?