The essence of the thing. Aleksina A.

The brilliant mathematician Lisa earns a living by cleaning. She does not understand the motives and deeds of people too well, another thing - that have lived things with people. They tell Lisa about their owners. Even that which she better not know.

This book can be read differently: as a detective, as a novel of education, as a philosophical parable, even as a discussion about the unity and opposite of music and mathematics. But no matter how you read it, fragile, but stubborn and fearless Lisa will take place in your heart forever.