Ethics of blogging university papers?

Ever since Coturnix at A Blog Around the Clock wondered where all the good art historian blogs are, I've thought about sharing some of my own interpretations and analysis of art history.

Some papers I wrote in university may make for some interesting discussion and hopefully illumination; but is it ethical? I can remember the university held onto copies of the students' work so they could check future papers against plagiarism, but is there some ownership over these papers by the universities?

I put the question to Twitter last night, and thereby to Facebook. Tweet:
Anyone know an ethical reason not to use my old university essays as blog posts? Property of the university or my brain?

So far, I've received about a dozen responses, most clearly of the opinion that my brain owns the words, and as cautioned, to be sure to include citations. I thought I'd open the discussion up here on the blog for longer comments than 140 characters allow.

And if I do start posting portions or a series based on older essays - anyone interested in representations of the mysterious centres of thought in fin-de-siecle Symbolist painting?

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