Ludwik Lejzer Zamenhof, Dr. Esperanto's International Language… (2006)
“ Everything written in the international language can be translated by means of this vocabulary. If several words are required to express one idea they must be written in one, but separated by [apostrophes] ; e.g., frat'in'o, though one idea, is yet composed of three words, which must be looked for separately in the vocabulary. ”
