This paper argues that poems are intrinsically but gradually argumentative. It describes both explicit argumentative forms (conflicting points of view, interlocutive and interdiscursive dialogism) and implicit ones, through what Grize called schematizations. Focusing on the study of several poems (by Rimbaud, Jaccottet, Michaux, Grosjean, Gaspar), it pays a particular attention to argumentation dealing with literature itself (through burlesque and pastiche), and to epidictic texts seeking for expressivity or obliterating their speaker. The close connection between formal choices and thematic contents in poetry shows that it tightly links ethics with aesthetics, a feature that the analyst should take into account. argumentation, dialogism i...