It's this process of creative reinvention that the renowned sociologist Sara Lawrence-Lightfoot details in The Third Chapter, which redefines our views about the casualties and opportunities of aging. She challenges the still-prevailing and anachronistic images of aging by documenting and revealing how the years between fifty and seventy-five may, in fact, be the most transformative and generative time in our lives, tracing the ways in which wisdom, experience, and new learning inspire individual growth and cultural transformation.