while scrutinizing the alternative Ido, highlighting the importance of having a universally accepted auxiliary language. In the book, Witteryck shares his personal journey through the heated debates regarding auxiliary languages, discussing his initial interest in Volapük before discovering Esperanto. He articulates his admiration for Esperanto's structure and simplicity, contrasting it with what he perceives as the flawed reasoning behind Ido’s creation. The latter part of the text addresses ten specific criticisms posed by Ido proponents against Esperanto, systematically rebutting each point. Witteryck argues that not only is Esperanto superior in terms of clarity and phonetic consistency, but it also promotes a more efficient and harmonious communication framework, making it an ideal choice for a global auxiliary language. Overall, the book is a thorough defense of Esperanto, advocating for its acceptance over the competing Ido language. (This is an automatically generated summary.)