*Common Sense Economics*
The third edition is now out, and the authors are James D. Gwartney, Richard L. Stroup, Dwight R. Lee, Tawni H. Ferrarini, and Joseph P. Calhoun.
Self-recommending, this is a very good introduction to economics for say a smart high school student who reads books. Sadly, more and more politicians and indeed professional Ph.d. economists need this wisdom too.