en_tn/pro/08/05.md

naive

inexperienced or immature

learn wisdom

The abstract word "wisdom' refers to what a wise person believes and to the way in which he acts. AT: "learn how a wise person acts" or "learn what it means to be wise" (See: rc://en/ta/man/translate/figs-abstractnouns)

you must get an understanding mind

"you must begin to understand things with your mind"