I can totally relate to everything said here.
Everyone is an idiot until proven otherwise.
A fellow INTJ doesn't understand this concept and indirectly calls me stupid. That only proves my point about how stupid people think smart people are stupid.
In a thread about relationships between the INTP and the rest, I wrote that *cliché incoming* ESFJs are stupid. I can explain why and apply that to your statement.
Extroverts concentrate more on the environment and not on themselves.
Sensors concentrate on facts and not on ideas (because they don't have any).
Feelers care about morality and not about logic and competence.
Judgers aren't open to new things and stick to their routine. That means they won't learn much and stick to what they know.
Therefore ESFJ is the stupidest type. They might be the nicest, though (nope, ENFP is). No offense ESFJs, not like you care about intelligence, anyway. I apologize if I offended you anyway, and don't take it personal, cause everyone is different. Now that we got that out of our way, let's go to the statement: How can you prove your intelligence if you don't have any? You can't. It's that simple. ENTJs, support me, please, in case I'm gonna get misunderstood by other people here. Thanks.