An anecdote on wisdom and anecdotal evidence.

I once asked a wise fellow the following question: At night, when I've had a difficult day, or a great day, should I work, sleep, or read?

He said, more spewing the words upon my previously parched countenance than speaking them into my ready ears: "Read! Always read, you damned fool!"

I learned also the difference between knowledge and wisdom on that day. Knowledge is spoken by others, wisdom is felt and tasted by oneself. 

P.S., anecdotal evidence is highly unreliable and precious.