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: Mikhaíl Afanasyevich Bulgakov was a Russian writer and playwright active in the first half of the 20th century. He is best known for his novel The Master and Margarita, which has been called one of the masterpieces of the 20th century.