If you don't believe that the messenger is the message, then watch these clips of classic Mr. Rogers interviews...
Our essence shines through in every part of our being at all times...
How we pause
Word choice
Thing we don't say
What we do say
Cadence
Eye contact
Facial expression
A million other things
Therefore, the path to being a messenger is not just becoming a better expert or a better communicator. It's becoming a better person.
SOURCE: Charlie Rose Show