Heidegger considers poetry to be the pinnacle of all art forms because it most accurately illustrates the essence of art. He views art as fundamentally concerned with setting-into-work of truth (i.e. bringing to light truth), and he believes that poetry is best able to perform this function. Poetry sets-into-work truth with superiority, because it is able to use language to show truth. The linguistic nature of poetry makes it stand apart from all other genres of art and, in Heidegger’s opinion, gives it a “privileged position in the domain of the arts” Other art forms can still set to work truth, when they contain the essence of poetry, which Heidegger calls poesy, but they cannot reach the level of articulation that poetry is able to obtain. Poesy technically means the art of making poetry, so other arts, though they are not poetry, can still be created according to poetic principles. These poetic principles are focused on the projection of truth. Thus, all forms of art can be traced back to poetry through the notion of poesy, as Heidegger relates, “If all art is in essence poetry, then the arts of architecture, painting, sculpture, and music must be traced back to poesy.”
It is unfortunate that Heidegger did not explore this notion of poesy further in his analysis of other art forms. Perhaps, through such exploration, the value of other art forms would become more explicit. Abstract music, for example, is one such art form, which jumps out as having a unique type of poesy; its message is often as loud as poetry if not louder, depending on the person and circumstances. In one sense, abstract music does not have the linguistic characteristic of poetry, and yet, in other sense, it can speak through a language all its own. It can express human emotions in a deep sense; emotions, which may not even be expressible in words. Such depth of feeling needs to be accounted for in art and while poetry proper certainly can describe and elicit such deep feelings, there also needs to be space for art forms to describe and elicit feelings incapable of being articulated in human language. Poesy may be the foundation for the art forms, but the manner in which poesy is displayed varies, making each art form play a different role in the setting-into-work of truth.