In pre-search-engine days, I once found a volume in the library that documented the outcomes of many church councils. At the time, I was particularly interested in the doctrine of the soul, and I seem to recall finding several relevant pronouncements, e.g., one that said that if anyone says that the soul has parts, or is divisible, let him be anathema.
Unfortunately, I do not recall which book it was where I read this, and Googling around has proved frustratingly ineffective. Does anyone recognize what I'm talking about? Where can I find a list of official or semi-official documents pertaining to the doctrine of the soul?