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"WE'RE NOT STUPID!
Tsk! Tsk! I've only ever heard stupid people say that !
Intelligent people know that they are stupid.
That is how they become intelligent -- by trying to correct the stupidity in themselves which they perceive!
One must substitute ignorant for stupid wherever it appears in the last two sentences. Ignorance is treatable, while stupid just is. I did NOT say stupid justice, but I was certainly thinking it!