I really liked this one. All in nuances and a true story about friendship, compassion, fidelity and the utter brilliance of mathematics. The math is brilliant and the characters pull at your heart strings delicately. You end up a part of this somewhat unusual trio of friends an old professor with a short term memory condition, his housekeeper and her 10 years old son. It's what I've nicknamed in my mind "frivolité" literature. Every word, every sentences have their place. It's like the most beautiful piece of lace.