pessimist ...
optimist is good and bad,
pessimist is good and bad,
must know what things should be optimist,
must know what things should not optimist,
must know what things should be pessimist,
must know what things should not be pessimist,
optimist is good for good things,
pessimist is good for bad things,
optimist is bad for bad things,
pessimist is bad for good things,
what is good things?
what is bad things?
need knowledge,
need understand,
optimist only is not perfect,
pessimist only is not perfect,
too optimist is not good,
too pessimist is not good,
optimist need pessimist,
pessimists need optimist,
optimist + pessimist = balance,
optimist + pessimist = perfect,