Origine: Acholi, East Africa
Source: Acholi (Uganda, South Sudan) proverb; original text, translation and explanation from "Acholi Proverbs: (118 in Total)," African Manners (africanmanners.wordpress.com), 2012. Earlier recorded here as documented in "Caro lok: proverbs & wise sayings of the Acoli people of Uganda"; that book was not read.
La source l’explique: used of a person who needs tough treatment before he can see sense
. La formulation du sens est de nous.