Sketches of Subjective Truth

There's an old and dusty question kicking around metaphysics: what exactly is truth? Is something truthful if it corresponds to reality? Is something truthful if it is useful in describing the universe? I should approach this question with the appropriate caution: there is an answer there, but I am in no position to find it; I am an artist, not a mathematician or metaphysician. Formulating these sorts of truth finding equations has never been part of the job description. And yet truth, of some kind, does seem relevant to the way we talk and think about art.