I recently received a note from a reader who asked for my three top books or other sources for leadership insights. That should be an easy question to answer for someone who writes about leadership as much as I do. And three worthy selections did indeed come to mind: The Essential Bennis, Jim Collins’s Good to Great, and Bill George’s True North. But the more I thought about it, the more I realized that while everyone should read these books, they’re no longer in my top three — reading them is like betting the ante at the poker table.