If a man insisted always on being serious, and never allowed himself a bit of fun and relaxation, he would go mad or become unstable without knowing it.
Bio: Zhuge Liang, courtesy name Kongming, was a chancellor and regent of the state of Shu Han during the Three Kingdoms period. He is recognised as the most accomplished strategist of his era, and has been compared to Sun Tzu, the author of The Art of War.