Reading over the last post to get a more clearer picture of my train of thought, it struck how banal the tattoos seem without the pretext of addiction. I still like the idea of having tattoos though, so here are a few alternate ideas:
-"a priori" -- from the former; In everyday speech, it denotes something occurring or being known before the event.
-"amor est vitae essentia" -- love is the essence of life
-"annus mirabilis" -- "wonderful year" VS "annus terribilis" -- "dreadful year"
**"cetera desunt" -- "the rest is missing"(b) VS "compos mentis" -- "in control of the mind"(f)
The key with all of these is that is has to serve three functions at once: 1) It has to tell us something about the character; 2) It has to tell us something about the themes of the story; 3) It has to tell us something about how to read the structure of the story.