Karl Pillemer, Ph.D., is a professor of Human Development at Cornell University. A family sociologist and gerontologist, he is the founder of the Cornell Estrangement and Reconciliation Project, in which over 1600 individuals have been surveyed regarding their their experiences of family rifts and ways to overcome them. He is the author Fault Lines: Fractured Families and How to Mend Them (Avery, 2020). His two earlier books share older people's advice for living: 30 Lessons for Loving: The Wisest Americans Advice on Love, Marriage, and Relationships and 30 Lessons for Living: Tried and True Advice from the Wisest Americans. He writes and speaks extensively about family relationships, marriage, and elder wisdom.