I Tweet with the handle of centerofright. This Quote

There are known knowns. These are things we know that we know. There are known unknowns. That is to say, there are things that we know we don’t know. But there are also unknown unknowns. There are things we don’t know we don’t know.

By Donald Rumsfeld says how much we don’t know that we don’t know. Tweeting and blogging for me is to gain new knowledge as it is a never ending thirst.

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