This is also related to the classical elements of air, water, earth, and fire; as sanguine, phlegmatic, melancholic, and choleric, respectively.
en.wikipedia.org Heat and dryness give rise to acute diseases, cold and moisture produce phlegmatic affections, cold and dryness give rise to melancholy.
en.wikipedia.org Phlegmatic means pertaining to phlegm, corresponds to the season of winter (wet and cold), and connotes the element of water.
en.wikipedia.org He determined that the phlegmatic type has no interest in either the beautiful or the sublime, so there was an absence of both (sb).
en.wikipedia.org Also, the melancholy and sanguine would be sort of opposites, as the choleric and phlegmatic, since they have opposite traits.
en.wikipedia.org