[gshubert17]

Mary Doria Russell put it memorably (for me) in this quote,

http://www.goodreads.com/quotes/417319-we-all-make-vows-jimm...

It's longer, but here's one part. The speaker is explaining being married 4 times to 4 different men (each named George--the "same" person).

"Every ten years or so, George and I have faced the fact that we have changed and we've had to decide if it makes sense to create a new marriage between these two new people. . . . Which is why vows are such a tricky business. Because nothing stays the same forever."