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: Thubten Yeshe was a Tibetan lama who, while exiled in Nepal, co-founded Kopan Monastery and the Foundation for the Preservation of the Mahayana Tradition. He followed the Gelug tradition, and was considered unconventional in his teaching style.