Draw a line and then write four words from left to right: optimist, realist, skeptic, and cynic.  In so doing you move from sunshine to partly cloudy, to sodden gray sky, to near darkness.  The young woman who is an optimist says, “Hey, there are lots of handsome guys here.”  The realist says, “There are a few good men left, but not many!”  The skeptic says, “I doubt that there is one for me; I’ll probably end up being an old maid.”  And the cynic says, “I’m sure that I’ll never find anyone to marry.”