There's No Such Thing As a Free Lunch by Milton Friedman (1975, Book)

I am a huge fan of Milton Friedman. As Alan Greenspan said about Milton Friedman he is one of the very few people with a sufficiently unique view and ideas that has changed the world for his (Friedman's) ideas. This book was excellent for its wide range of topics that Professor Friedman covered. These topics ranged from monetary policy to school vouchers and many other things. Every topic covered in the book gave me a new way of seeing the world. Further, in every essay and in the Playboy interview Milton's logic is impeccable and well backed with facts and very deep insights that few other people would think of.