The secret of the true love of work is the hope of success in that work; not for the money reward, for the time spent, or for the skill exercised, but for the successful result in the accomplishment of the work itself.
I think writing letters is a lost art, but nowadays it's something that means even more, because it's so easy to communicate in so many different ways. But I find a love letter can even be a little post-it note stuck in your pocket, with a sentence or a few words.