KNOW IT ALL

It's never ceases to amaze me how one can learn so much from inside the covers of a good tome, for example:-
A sceptical anthropologist was cataloguing South American folk remedies with the assistance of a tribal elder who indicated that the leaves of a particular fern were a sure cure for any case of constipation. When the anthropologist expressed his doubts, the elder looked him in the eye and said, "Let me tell you, with fronds like these, you don't need enemas."