Gordon MacDonald is the former pastor of Grace Chapel in Lexington, Massachusetts and author of numerous best-selling books on leadership, marriage and the spiritual life. He has also served as president of InterVarsity Christian Fellowship, president of World Relief, and Chancellor of Denver Theological Seminary. In this conversation with Wayne Rice and John Coulombe, Gordon reflects on his lifetime of ministry and offers advice to people of grandparenting age who want to remain relevant and influential during the last quarter of their lives.  He also discusses the power of mentoring relationships, the art of aging gracefully and the joy of looking forward to heaven.