When I read or remember some of the following quotes, I smile....

“Never become so much of an expert that you stop gaining expertise. View life as a continuous learning experience.” ---  Denis Waitley

"Where facts are few, experts are many." ---Donald R. Gannon

"Always listen to experts. They'll tell you what can't be done and why. Then do it."---Robert Heinlein

“If an expert says it can't be done, get another expert”--- David Ben-Gurion

“An expert is somebody who is more than 50 miles from home, has no responsibility for implementing the advice he gives, and shows slides.” ---Edwin Meese III

"The bad teacher's words fall on his pupils like harsh rain; the good teacher's, as gently as dew."--- Talmud: Ta'anith 7b

“If you can’t convince them; confuse them.”---Harry S. Truman