In Reply to: Mark Twain said... posted by Alan on October 01, 2003 at 03:13:33:
The version I heard is similar.
When I was 14 I could not beleive how stupid my father was. I then went my way and returned at 21. I was astonished at how much he had learned in 7 years.
It has proven true in my life -- different ages and time period -- and I told my dad so.