Related:

• If symptoms persist, consult a specialist.
• The three best ways to get where you want to go are: persist, persist, persist.
• Some of the world's greatest feats were accomplished by people not smart enough to know they were impossible.
  -- Doug Larso...
• The greatest productive force is human selfishness.
  -- Lazarus Long, from Robert A. Heinlein's "Time Enough For Love...
• People will persist in joining things. -- The Motorcycle Boy
• One of the saddest lessons of history is this: If we've been bamboozled long enough, we tend to reject any evidence of the bamboozle.
  We're no longer interested in finding out the truth....
• Blaauw's Law Established technology tends to persist in spite of new technology.
• Established technology tends to persist in spite of new technology. -- Gerritt Blaauw
• [FORTRAN] will persist for some time -- probably for at least the next decade. -- T. Cheatham