The Other Side

I read George W. Bush's memoir recently, on M's recommendation that I read something from the "other side."  I found the book really interesting, although I can't say I agree with everything Pres. Bush writes.  My full review is available at my book blog.  That reading has got me thinking about what else I don't know, so I may broaden my reading a little bit this summer.  So, any recommendations for me out there?  What should I read that will force me to re-think my preconceptions?