I hope it doesn't appear that I'm being lazy by posting quotes instead of writing my own, but this thought in particular is quite a gem:
"A life lived to please one's self is empty, and the journey to become one will finally lead you to empty yourself for the sake of one another." --To Become One, by Seay and Keager (thanks to Alaina who gave me the book :)
For those who are either considering marriage, hoping for marriage, or in marriage, I pray that one day soon, you will take joy in the sanctifying qualities of a selfless "oneness".