In fairness to potential buyers of Language of the Spirit, Jan Swafford does not reveal why classical music is, or at least can be for those open to it, the language of our spirit. In fairness to Swafford, it’s doubtful that anyone could, so mysterious yet accessible is our greatest music. Instrumental music is, after all, a non-verbal art. The sounds can suggest things. But they can’t say them. Even so, those who’ve heard and loved the music from this tradition have no trouble understanding why it is indeed the language of our spirit.