Qualities, elements, seasons, humours
Four qualities, four elements, four seasons, four humours
| season | element | humour | body fluid | location | 
| Spring | air | sanguine | blood | heart | 
| Summer | fire | choleric | "yellow bile" | liver | 
| Autumn | earth | melancholic | "black bile" | spleen | 
| Winter | water | phlegmatic | phlegm | (various) |