There's an excellent blog-post on the ever-changing tradition of marriage on a blog entitled "This is what I think", by Archie Levine.
It is quite similar to a blog-post that I wrote earlier this year entitled "The changing face of marriage". In fact, mine could be a sequel to his, as his is more about marriage from Biblical times to the 19th century, and mine focuses more on how marriage changed in the twentieth century.
