Every linguistic sign is located on two axes: the axis of simultaneity and that of succession.
Roman JakobsonThe poetic function is the set towards the message itself, focus on the message for its own sake which by promoting the palpability of signs, deepens the fundamental dichotomy of signs and objects.
Roman JakobsonIt 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 Jakobson