Quote

[Juan Cires Martinez]

> "The sign of a first-rate mind is the ability to keep two opposing thoughts 
> in the mind and continue to function"
> fitzgerald perhaps?

There is a very similar quotation in the Hithhiker's Guide to the Galaxy
adventure game, by Douglas Adams.  It is as follows:

  "Thirty million generations of philosophers have debated the 
   definition of intelligence.  The most popular definition appears in 
   the Sirius Cybernetics Corporation android manuals: 'Intelligence is 
   the ability to reconcile totally contradictory situations without 
   going bonkers -- for example, having a stomach ache and not having a 
   stomach ache, holding a hole without the doughnut, having good luck 
   and bad luck simultaneously, or seeing a real state agent waive his 
   fee.'"

Saludos, Juan.