In 1874 a young man, only 23 years of age, wrote a little book called "The Greatest Thing in the World."  The thesis of Henry Drummond's work was that love is the most powerful force in the world.  Someone may say, "That may have been true in his day, but it certainly does not hold water today.  Things have changed!"  I grant you, things have changed.  That is one point no one will argue.