Unrhymed cadence in vers libre is built upon "organic rhythm" or the rhythm of the speaking voice with its necessity for breathing, rather than upon a strict metrical system. For vers libre addresses the ear, not the eye. Vers libre is liberated from traditional rules concerning meter, caesura, and line end stopping. Every syllable pronounced is of nearly equal value but is less strongly accented than in English; being less intense requires less discipline to mold the accents into the poem's rhythm. This new technique, as defined by Kahn, consists of the denial of a regular number of syllables as the basis for versification; the length of the line is long and short, oscillating with images used by the poet following the contours of his or her thoughts and is free rather than regular.