I haven't a clue about the biology or the psychology involved when a person dissolves into tears, but it is quite fascinating to note what turns them on. There are wives who can cascade over a late husband or a burned dinner, and equally pour tears of joy over a new bonnet or a renovated bathroom.... A while ago I took a ship back from Europe. Amid the tumbling confetti ... I found myself misty-eyed watching a young lady waving a tearful farewell to her boyfriend on the dock. I couldn't figure out if I was crying at her plight, or in delight that he wasn't coming along with us.
