Dr. Roger Kligler will talk about medical aid in dying, an issue about which he is passionate and deeply involved. Dr. Kligler is the plaintiff in a lawsuit against the Commonwealth of Massachusetts to authorize this end-of-life option and is lobbying for the passage of legislation that would give terminally ill adults with a prognosis of six months or less to live the option to obtain a prescription for medication that they can decide to ingest to die peacefully in their sleep if their suffering becomes unbearable. Since his retirement as an internist three years ago, Dr. Kligler has been a volunteer with Compassion & Choices, the country’s oldest and largest nonprofit dedicated to improving care and expanding options at the end of life. Dr. Kligler has been diagnosed with incurable metastatic prostate cancer. Meet at King’s Chapel Parish House, 64 Beacon Street, at 5:30 p.m. for light hors d’oeuvres and wine; program begins at 6 p.m. BHV/BHS members: Free. Guests of members and prospective members: $20.