The essence of the matter

The brilliant mathematician Lisa earns a living by cleaning. She doesn't understand people's motives and actions very well, but when it comes to objects that have been lived with by people, it's a different story: she instantly analyzes their features, learning about their owners even things she would prefer not to know. Unlike people, objects never lie, Lisa is sure. But one day she will be made to doubt this. This book can be read in different ways: as an exciting thriller, as a novel of upbringing and coming of age, as a philosophical parable, and even as a discussion of the unity and opposition of music and mathematics. However you read it, the fragile but stubborn and fearless Lisa will forever hold a place in your heart.