Happily Sad :-)-:

A thing only exist in the place where it's opposite subsides.  Therefore, nothing in life can prevail without the other different, yet paralleling presence of it's reversed and paradoxical counterpart.  An example of this truth is the ability to understand joy as a direct knowing of pain.  Now this does not discount the ability to discern, but it does suggest that one can never fully understand a thing without having lived in a place of it's opposite.