Starred Review. Ogawa (The Diving Pool) weaves a poignant tale of beauty, heart and sorrow in her exquisite new novel. Narrated by the Housekeeper, the characters are known only as the Professor and Root, the Housekeepers 10-year-old son, nicknamed by the Professor because the shape of his hair and head remind the Professor of the square root symbol. A brilliant mathematician, the Professor was seriously injured in a car accident and his short-term memory only lasts for 80 minutes. He can remember his theorems and favorite baseball players, but the Housekeeper must reintroduce herself every morning, sometimes several times a day. The Professor, who adores Root, is able to connect with the child through baseball, and the Housekeeper learns how to work with him through the memory lapses until they can come together on common ground, at least for 80 minutes. In this gorgeous tale, Ogawa lifts the window shade to allow readers to observe the characters for a short...