I hope you are having as good a Christmas as I am, having received three books by the brilliant economist Dr. Thomas Sowell:
Applied Economics, A Conflict of Visions & Knowledge and Decisions.
I've been happily buried in the last one all afternoon.
While Sowell's writing skills, cognitive powers and mental discipline are far beyond mine, a Sowell book is great exercise for the mind. Reading one is better than a 3-credit college course for learning new things, new ways to look at and understand the world.