"In the world everyone knows enough to pursue what he does not know, but no one knows enough to pursue what he already knows. Everyone knows enough to ...

Suppose I try saying something. What way do I have of knowing that if I say I know something I don't really not know it? Or what way do I have of knowing that if I say I don't know something I ...
Suppose I try saying something. What way do I have of knowing that if I say I know something I don't...
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