Dear Alice, actually it was meant as a mild joke, whether it was helpful or not.... The only medieval theory I believe is the one about the sun going around the earth. Everyone else I know believes it too: otherwise why don't we call it earthset and earthrise?
I first heard the humours theory expounded by a student of Thomas Aquinas, who got us to remember the biles, sanguines, melancholia (under the sign of Saturn), by reference to contemporary things like showers and such. I have personally found that nothing works, and I have the water bills and Scoth crates to prove it!
Yours, Peter T.
P.S. Hi, Sheye. Where have you been keeping yourself (and your irritating cerebrum, as if, as they say in Southern California)?