When Anne-Marie Slaughter published an article in The Atlantic in 2012 titled “Why Women Can’t Have it All”—an unfortunate title not of her choosing—she could not have envisioned the passionate commentary that would follow. The piece generated nearly three million views following its publication. It became—and remains today—the most widely read piece in the 150-year history of The Atlantic. Slaughter spent the last couple of years turning the article into a book, Unfinished Business: Women Men Work Family (Random House, $28), that expands on and refines some of her original ideas.  The first woman to serve as Director of Policy Planning at the State Department, a former Dean of the Woodrow Wilson School at Princeton, an expert on foreign policy, and now head of New America, Slaughter has also become a leading voice on the structure and values of the American workplace and its impact on women, men, and families. Drawing on her own experiences meeting the demands of work and family, Slaughter explores the pitfalls for a society that is failing to the realities of the 21st century. She takes issue with Sheryl Sandberg’s reliance on leaning in as a solution for women’s progress in the workplace, calling for more systemic change to ensure that women at all levels—and men—can be better workers and better parents to their children. It is a thoughtful, highly engaging, and important book.