There may seem to be a problematic relationship between the tripartite soul as it is discussed in Galen’s specific ethical works, in particular Aff. Pecc. Dig., and this physiological conception (e.g., in PHP). The former ethical discussions give no significant account of a bodily aspect to psychic function, while in the latter context certain features central to that ethical account are absent or recede. The internal interrelation of the parts, so essential to the ethical account (see below) is not only absent from the physiological account; it is quite difficult to see how it could be mapped onto it.