This by itself would provide a most powerful lesson for anyone contemplating murder.
They teach us a simple but powerful lesson that each new generation of Americans must learn and pass on: we need one another.
But China's authoritarian system can also lead people elsewhere to ignore some powerful lessons about its economic experience.
It was a powerful lesson: something that seems black and white just may not be so.
Running across the country has taught him powerful lessons about motivation.
Thus do most managers overlook the two powerful lessons we could learn from these crises.
Our conclusion is that there are indeed many powerful lessons to be learned.
In the process, he did, however, learn some powerful lessons about making timely investment decisions.
He said he had learned some powerful lessons there for dealing with his job.
The deal may also offer a powerful lesson on how to resist protectionism.
