<p>We argue in this paper that poetic texts, as well as any other texts should be analysed through 3 perspectives: semantic, iconic and enunciative, each one with a positive pole and a negative one. According to the semantic perspective, poetic and scientific texts are both on the positive pole, because they create a new representation of the world. According to the iconic one, that Jakobson called the poetic function, poems are generally near the positive pole but their accurate position depends on formal characteristics which have changed along history. They share this position with texts such as advertisements, songs or nursery rhymes. According to enunciation, a lot of poetical texts belonging to lyrics stand on an average position betw...