New book in nine years, a work on the philosophy of life. - Title: The Maturity Switch - Author: Mariko Hayashi - Publisher: Kodansha Gendai Shinsho - Features: New book in nine years - Content: A work on the philosophy of life - Language: Japanese Thank you for viewing. This is a used item, so there may be scratches, stains, and folds. Please check the condition in the images. Due to the nature of used items, no claims, no returns, and no cancellations are accepted.