Speech sounds cannot be understood, delimited, classified and explained except in the light of the tasks which they perform in language.
Roman JakobsonAt first acoustics attributed to the different sounds only a limited number of characteristic features.
Roman JakobsonThe search for the symbolic value of phonemes, each taken as a whole, runs the risk of giving rise to ambiguous and trivial interpretations because phonemes are complex entities, bundles of different distinctive features.
Roman Jakobson