2008-05-09 | Love in Action This is a 78-minute dharma talk from Zen Master Thich Nhat Hanh in Hanoi during the “Engaged Buddhism in the 21st Century” retreat. This is the fifth talk on May 9, 2008 and the talk is offered in English. Teaching and Social Work In 1964, Thay was teaching at Colombia University and my friends in Vietnam asked me to return home.