Esperanto ( or ; ) is a constructed international auxiliary language. It is the most widely spoken constructed language in the world. Its name derives from ("" translates as "one who hopes"), the pseudonym under which physician L. L. Zamenhof published the first book detailing Esperanto, the , on 26 July 1887. Zamenhof's goal was to create an easy-to-learn, politically neutral language that would transcend nationality and foster peace and international understanding between people with different languages.