21. The cornerstone of intelligence is being friendly with the people. Leave a Comment / Affection And Friendship / By technorthstar3@gmail.com 21. The cornerstone of intelligence is being friendly with the people. 21 رَأسُ العَقْلِ التَّوَدُّدُ إلَى النّاسِ. Share on Whatsapp Bookmark (0) Please login to bookmark Username or Email Address Password Remember Me No account yet? Register