The Wall Street Journal has a short profile of Robert Lucas,  one of the most influential macroeconomists of at least the past 20 years (when I picked up my first grad macro text).  Lucas is probably best known for integrating “rational expectations” into macro models (he convinced his wife, at least).  He is also the namesake of the “Lucas Critique”  of using past behavior to predict the future.   Here’s a nice summary of his contributions.

Lucas might sound like someone affiliated with the Chicago School, and indeed, that is the case.  Someone you should know.