Here's my current list (and yes, I am reading all six concurrently):
The Federalist and Anti-federalist Papers
Life Together by Bonhoeffer
The Republic by Plato
The 21 Irrefutable Laws of Leadership by Maxwell
Getting Things DONE by David Allen
The Histories of Herodotus (nine books)
- The Constitution of the United States of America
- The Declaration of Independence
- The Contrarian's Guide to Leadership by Steven Sample.
Sample's book may be the best modern leadership text I have read. For every book you read, you choose not to read 1000 others. If you consider yourself a leader, exclude 1000 books for this one.