Looking for a great quote regarding highly educated people versus
people who make things happen.  I vaguely remember reading a quote
about the many celebrated over-educated fools who are low achievers,? 
something, something??  I am trying to make a point about common sense
v/s high I.Q. Can you help me?

"Nothing in the world can take the place of persistence. Talent will
not; nothing is more common than unsuccessful men with talent. Genius
will not; unrewarded genius is almost a proverb. Education will not;
the world is full of educated derelicts. Persistence and determination
are omnipotent. The slogan 'press on' has solved and always will solve
the problems of the human race." -- Calvin Coolidge

Not what you're looking for, but a good quote nevertheless:

..."The slowness of genius is hard to bear, but the slowness of
mediocrity is intolerable"..."  ~~Henry Thomas Buckle