People are happiest at the beginnings and the ends of their lives. The vast majority of Americans over 65 live independently. The older people get, the less afraid they are of dying. Aging is a natural, powerful, lifelong process. So how come so many of us unthinkingly assume that depression, diapers, and dementia lie ahead? That the 20th century’s astonishing leap in life expectancy is a disaster-in-the making? Underlying all the hand-wringing is ageism: discrimination that sidelines and silences older people. So I’ve written a book. I blog about it. I led the team that developed Old School, a clearinghouse of anti-ageism resources. I am the voice of Yo, Is This Ageist? (Go ahead, ask me.) I’ve written a consciousness-raising booklet. And I speak widely. All tools to help catalyze a movement to make discrimination on the basis of age as unacceptable as any other kind.