Another splendid article making some excellent points. I love detecting an authors personal foibles and prejudices within the text, as it gives you a sense of who they are, even if you may disagree with some of their perspectives.

For example, I seriously doubt a modern editor would allow CS Lewis his casual prejudices where he states he distrusts non-smokers, teetotallers, and vegetarians (see the start of The Voyage of the Dawn Treader), but again, I love that those bits are there, because they provide important insight into who he was, and the era in which he lived.