"If all art is in essence poetry, then the arts of architecture, painting, sculpture, and music must be traced back to poesy. That is pure arbitrariness. It certainly is, as long as we mean that those arts are varieties of the art of language, if it is permissible to characterize poesy by that easily misinterpretable title. But poesy is only one mode of the lighting projection of truth, i.e., of poetic composition in this wider sense. Nevertheless, the linguistic work, the poem in the narrower sense, has a privileged position in the domain of the arts."
"Art, as the setting into work of truth, is poetry. Not only the creation of the work is poetic, but equally poetic, though in its own way, is the preserving of the work; for a work is in actual effect as a work only when we remove ourselves from our commonplace routine and move into what is disclosed by the work, so as to bring our own nature itself to take a stand in the truth of what is."
Being a Psychology & Philosophy double major, I have been reading excerpts from Heidegger's "Origin of the Work of Art" in my aesthetics course. The work is absolutely incredible, though admittedly dense. In it, Heidegger examines the nature of art and what it is that makes a work of art a work of art. The last chapter of the work, entitled "Truth and Art", concerns art's relationship with truth. Heidegger eventually makes the assertion that all art is essentially poetry. Naturally, poetry being my principle means of expression, I was highly aroused by his claims. I have included here several passages scattered about the post that I personally feel are wonderful, informative, articulate, and to a certain degree true (though certainly in lieu of the Heideggerian notion of truth). Enjoy!
"It is due to art's poetic nature that, in the midst of what is, art breaks open an open place, in whose openness everything is other than usual."