  The last art that Hegel considers is also an art of sound, but sound understood as the sign of ideas and inner representations—sound as speech. This is the art of poetry (Poesie) in the broad sense of the term. Hegel regards poetry as the “most perfect art” (PKÄ, 197), because it provides the richest and most concrete expression of spiritual freedom (in contrast to sculpture which, in its classical form, gives us the purest ideal beauty). Poetry is capable of showing spiritual freedom both as concentrated inwardness and as action in space and time. It is equally at home in symbolic, classical and romantic art and, in this sense, is the “most unrestricted of the arts” (Aesthetics, 2: 626).