Related:

• There has been an alarming increase in the number of things you know nothing about.
• If you're confident after you've just finished an exam, it's because you don't know enough to know better.
  -- Jay Weisma...
• Can you count the things you don't know about?
• WRONG Incorrect, erroneous. Generally, the things that are most likely to be wrong are those which you feel the most confident about.
  This confidence has usually led you to proclaim it is an undeniable fact to all and sundry, and to generally stake your reputation/life/ fortune on it....