If we value the Teachings we can learn from a post, a lantern, all Buddhas, a fox, a demon, a man or a woman. ... Long ago, Great Master Zhaozhou of the Tang Dynasty aroused the mind that seeks the Way. Setting out on a pilgrimage he vowed,
“If I encounter someone wiser than myself I shall ask for instruction from him or her, even if they are only seven years old. If someone is a hundred years old, if they are inferior to me, I shall teach them."
-Dogen, Rahai Tokuzui
He makes an interesting point about teaching and what/who you can learn about, but has he missed the point or directly found it?