What is the meaning of the proverb palm oil in which words are eaten

"Among the Igbo the art of conversation is regarded very highly, and proverbs are the palm-oil with which words are eaten"

Thi quote illustrates the belief of the Igbo people that sitting down to talk over a meal is as prized as a fine work of art. Proverbs (or conversation) aren't to be quickly absorbed and forgotten, they should be enjoyed with company and accompanied by thoughtful discussion. When you think about it, there just might be something for us to learn from this!