A good antidote against grey days.
At the right hôrâ, every year, the sons of the Eleusinians will have a war, a terrible battle among each other. They will do so for all days to come. I am Demeter, the holder of tîmai. I am the greatest boon and joy for immortals and mortals alike. But come! Let a great temple, with a great altar at its base, be built by the entire dêmos. Make it at the foot of the acropolis and its steep walls. Make it loom over the well of Kallikhoron, on a prominent hill. And I will myself instruct you in the sacred rites so that, in the future, you may perform the rituals in the proper way and thus be pleasing to my noos.
(Hymn to Demeter, 265-275)