Changes in our aesthetic tastes have no value or meaning in and of themselves; what has value and meaning is the idea of change itself. Or, better stated: not change in and of itself, but change as an agent or inspiration of modern creations.
Poetry is the experience of liberty. The poet risks himself, chances all on the poem's all with each verse he writes.
Yes, I am well aware that nature - or what we call nature: that totality of objects and processes that surrounds us and that alternately creates us and devours us - is neither our accomplice nor our confidant.
Literature is the expression of a feeling of deprivation, a recourse against a sense of something missing. But the contrary is also true: language is what makes us human. It is a recourse against the meaningless noise and silence of nature and history.