18. Through good etiquette brainpower is sharpened. Leave a Comment / Good Etiquette / By technorthstar3@gmail.com 18. Through good etiquette brainpower is sharpened. 18 بِالأدبِ تُشْحَذُ الفِطَنُ. Share on Whatsapp Bookmark (0) Please login to bookmark Close Username or Email Address Password Remember Me No account yet? Register