Marriage ceremony: an incredible metaphysical sham of watching God and the law being dragged into the affairs of your family.
It's also hard to improve on Lord Byron: "I have great hopes that we shall love each other all our lives as much as if we had never married at all."
In a more acceptable vein, there's Rilke:
"For one human being to love another that is perhaps the most difficult of our tasks; the ultimate, the last test and proof; the work for which all other work is but preparation."
Wilde, of course, was a sentimental old fool: "It's most dangerous nowadays for a husband to pay any attention to his wife in public. It always makes people think that he beats her when they're alone."