There are almost as many leadership theories as there are would-be practitioners. Many of those theories-or call them frameworks or philosophies-have excellent underpinnings. I've found that, regardless of the latest leadership formula you may choose to try, a few simple guiding principles can always be helpful. 

The stones in the Jefferson Memorial were deteriorating badly. The initial, knee-jerk plan was to replace the stones with fresh ones hauled up from a quarry in southern Virginia. This would cost a gazillion tax dollars and require closing the memorial to tourists for many months.

So some simple questions were asked. Why were the stones deteriorating? Because they were frequently cleaned with harsh chemicals.

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