What proverb about proverbs is found in the book things fall apart?

"Proverbs are the palm-oil with which Words are eaten."

Palm oil is a rich yellow oil pressed from the fruit of certain palm trees and used both for fuel and cooking. In their culture they used proverbs to communicate and to keep a better style, to show wisdom (intelligence) in a poetic way. In their culture they used proverbs in order to communicate and to use a more elevated style, to be clear and make vocabulary more interesting