From Ruth Graham's website:
Ruth and I don’t have a perfect marriage, but we have a great one. In a perfect marriage, everything is always the finest and best imaginable; like a Greek statue, the proportions are exact and the finish is unblemished. Who knows any human beings like that? For a married couple to expect perfection in each other is unrealistic. We learned that even before we married.
The unblemished ideal exists only in “happily ever after” fairy tales. I think that there is some merit to a description I once read of a married couple as “happily incompatible.” Ruth likes to say, “If two people agree on everything, one of them is unnecessary.” The sooner we accept that as a fact of life, the better we will be able to adjust to each other and enjoy togetherness.