The Universal Book for the Universal Language. As one of the only works personally supervised by Dr L. L. Zamenhof, this book is crucial to understanding not only the mechanisms of Esperanto as a language but also the spirit of its mission. Esperanto was founded with the aim of fostering world peace and bringing individuals from different societies together. Zamenhof and O'Connor hoped for a more communicative and co-operative future for humankind and sought to bring it about via this language. In this book you will see a fascinating regular structure to the language and a generous range of inspirations taken from European languages.