Ludwik Lejzer Zamenhof, Dr. Esperanto's International Language (1889)
“ I simplified the grammar to the utmost, and while, on the one hand, I carried out my object in the spirit of the existing modern languages, in order to make the study as free from difficulties as possible, on the other hand I did not deprive it of clearness, exactness, and flexibility. My whole grammar can be learned perfectly in one hour. The immense alleviation given to the study of a language, by such a grammar, must be self-evident to everyone. ”
