These days I met a Mr. Stubborn, who I do think, is a bit unreasonable and had a stubborn head.
     Is this what we called persistent? 
     A cliche topic lasts for a quite long time; A matter like a piece of cake argues for a quite long time; An expression shows Mr. Stubborn possessing a very naive and rude manner...

     I, easy-going and flexible, am doubtful and curious about Mr. Stubborn's mind.
     People are different from people.
     You can't count too much on others who behave, act, express like the way you are.

     Mr. Stubborn, superzealot of terrorist organization?

     Strange Behavior.