An idea related to machine translation appeared in the 17th century. In 1629, René Descartes proposed a universal language, where equivalent ideas shared a symbol.
ʌ n WORD_BOUNDARY aɪ d iə WORD_BOUNDARY ɹ ɪ l eɪ t ɪ d WORD_BOUNDARY t ə WORD_BOUNDARY m ə ʃ iː n WORD_BOUNDARY t ɹ æ n s l eɪ ʃ ə n WORD_BOUNDARY ʌ p ɪ ɹ d WORD_BOUNDARY ɪ n ð ə WORD_BOUNDARY s ɛ v ə n t iː n θ WORD_BOUNDARY s ɛ n t̠ʃ ə ɹ ɹ i WORD_BOUNDARY ɪ n WORD_BOUNDARY w ʌ n WORD_BOUNDARY θ aʊ z ə n d WORD_BOUNDARY s ɪ k s h ʌ n d ɹ ɪ d WORD_BOUNDARY t w ɛ n t i WORD_BOUNDARY n aɪ n WORD_BOUNDARY ɹ ɪ n eɪ WORD_BOUNDARY d ɪ s k ɑ ɹ t s WORD_BOUNDARY p ɹ ə p oʊ z d WORD_BOUNDARY ʌ WORD_BOUNDARY j uː n ɪ v ɜː s ə l WORD_BOUNDARY l æ ŋ ɡ w ɪ d̠ʒ WORD_BOUNDARY w ɛ ɹ WORD_BOUNDARY ɪ k w ɪ v ə l ə n t WORD_BOUNDARY aɪ d iə z WORD_BOUNDARY ʃ ɛ ɹ d WORD_BOUNDARY ʌ WORD_BOUNDARY s ɪ m b ə l WORD_BOUNDARY