The Orphic Hymns

sweetest one, wakeful, reminding us of everything that each of us has ever laid up in his heart, never straying, waking the mind in everyone.

Philagrypnos means "fond of lying awake": Memory keeps watch. What she keeps is whatever each person has "laid up" in the breast, the place where Greek poetry locates thought and feeling, as if knowledge were stored there for later use. The last verb, epegeirein, "to wake up," is the one Plato uses in the Meno when Socrates says that true opinions, once woken by questioning, become knowledge. In that dialogue Socrates argues that learning is really remembering, anamnēsis: the soul recovering what it knew before birth.