16. The cornerstone of reason is struggling against vain desire. Leave a Comment / Vain Desire / By technorthstar3@gmail.com 16. The cornerstone of reason is struggling against vain desire. 16 رَأْسُ العَقْلِ مُجاهَدَةُ الهَوى. Share on Whatsapp Bookmark (0) Please login to bookmark Username or Email Address Password Remember Me No account yet? Register