It is once again the vexing problem of identity within variety; without a solution to this disturbing problem there can be no system, no classification.
Roman JakobsonA linguist deaf to the poetic functions of language and a literary scholar indifferent to linguistics are equally flagrant anachronisms.
Roman JakobsonAcoustic phonetics, which is developing and increasing in richness very rapidly, already enables us to solve many of the mysteries of sound, mysteries which motor phonetics could not even begin to solve.
Roman JakobsonNow the identification of individual sounds by phonetic observation is an artificial way of proceeding.
Roman Jakobson