How well do you know yourself? That is the other question of marriage. How do you know you’ll stay faithful? Interested? Loving? How do you know you’ll stay in love? And even if you stay all of those things, how do you know you won’t one day fling out an arm and shatter something irreplaceable? And the truth is, you probably will do that, so then the question becomes, How good are you with a tube of glue?