L. L. Zamenhof

“ Every idea that cannot be conveniently expressed by the contents of the Fundamento de Esperanto, all Esperantists can express in a manner which they deem the most correct, as is done in any other language. But for reasons of unity all Esperantists are recommended to imitate, as much as possible, that style which is found in the works of the creator of Esperanto, who has worked more that any other for and in Esperanto and who knows its spirit better that any other. ”

“ Esperantism is the endeavour to spread throughout the entire world the use of this neutral, human language which, "not intruding upon the personal life of peoples and in no way aiming to replace existing national languages", would give to people of different nations the ability to understand each other, and would be able to serve as a conciliatory language of public institutions in those lands where different peoples fight amongst each other over language issues, and in which could be published those works that have an equal interest for all peoples. ”

“ An Esperantist is a person who knows and uses the language Esperanto with complete exactness, for whatever aim he uses it for. Membership in an active Esperantist social circle or organisation is recommended for all Esperantists, but is not obligatory. ”