The function of poetry is to point out that the sign is not identical to the referent.
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 JakobsonA new era in the physiological investigation of linguistic sounds was opened up by X-ray photography.
Roman Jakobson