I think this is coming from the Henry Ford quote, which is "Whether you think you can, or you think you can't--you're right."
This quote basically means that what you think you can do is all in your mind and how you perceive yourself. if you think you can do something, then you'll be able to do it. If you think you can't do something, then you won't be able to, because you have already given up in your mind.
Does that make sense?
The character that proposes the story telling competition that frames the remainder of the Canterbury tales is : Bailey
After creating the competition, Bailey quickly appoint himself as the judge for that competition
hope this helps
Amor espersnzs social laboral y familiar