'Tis easy enough to be pleasant,
  When life flows along like a song;
    But the man worth while is the one who will smile
      When everything goes dead wrong;
        For the test of the heart is trouble,
          And it always comes with the years,
            But the smile that is worth the praise of earth
              Is the smile that comes through tears.
                . . . .
                  But the virtue that conquers passion,
                    And the sorrow that hides in a smile--
                      It is these that are worth the homage of earth,
                        For we find them but once in a while.

~Ella Wheeler Wilcox, Worth While