I bought the audiobook 'Rocket Ship Galileo' from the iTunes store. Heinlein wrote some fine books before he descended into literary self-touching in the 1980s. I soaked up lots of Heinlein as a kid. In high school one teacher labeled me a Libertarian. I disliked the label then, because I considered myself a Republican. I don't need labels now, nor to be required to swear fealty to the ideas of a 16-year-old. But given the piece on Heinlein in Wikipedia, I think that the teacher had me sussed.