I remember learning about David Ricardo in college, but if you had asked me yesterday what he stood for, I wouldn't have been able to tell you.
Jacob Licht dropped off a book called, The Choice, which is a fable about a debate between Ricardo and a regular guy who thinks that protectionism/tariffs can be a good thing.
Needless to say, bit by bit, Ricardo takes him to pieces.
It's a fantastic book and further solidifies a lot of my thinking/understanding re: free trade and economics.
One of the reasons I love economics is because it is the study of the choices we make-both consciously and sub-consciously.