remembering betrays nature?

Somehow I thought of this poem in connection with the Archives of Exile project and Richard’s comment on my post yesterday. I don’t really know the poetry of Pessoa, and a quick bit of research turns up the fact that he wrote under a series of names — heteronyms, he called them — each of which had his own way of seeing the word and writing poetry. This is how Pessoa describes Caeiro, the writer of the poem below:

He sees things with the eyes only, not with the mind. He does not let any thoughts arise when he looks at a flower… the only thing a stone tells him is that it has nothing at all to tell him… this way of looking at a stone may be described as the totally unpoetic way of looking at it. The stupendous fact about Caeiro is that out of this sentiment, or rather, absence of sentiment, he makes poetry. (quoted in Wikipedia)

*

Rather the flight of the bird passing and leaving no trace
Than creatures passing, leaving tracks on the ground.
The bird goes by and forgets, which is as it should be.
The creature, no longer there, and so, perfectly useless,
Shows it was there — also perfectly useless.

Remembering betrays Nature,
Because yesterday’s Nature is not nature.
What’s past is nothing and remembering is not seeing.
Fly, bird, fly away; teach me to disappear.

Alberto Caeiro (Fernando Pessoa) Portugal
in Poems of Fernando Pessoa

*

I guess the point we are circling around is the way in which yesterday’s nature can’t be nature, or shall we say “natural”, but is culture. The wisteria in Rodney is historical, not natural, even though it is quite obviously a flowering vine blooming out of the ground in the spring. Does recognizing the wisteria as a human trace prevent me from fully seeing it, as I think I’m understanding Caeiro’s poem to say? Do Welty’s passionate things really endure in ways we can feel even when we are ignorant of the details? Or does everything simultaneously disappear and endure in some almost mystical way that is what we are feeling when we visit a ghost town or walk through ruins? And how much of this is sentimentality or nostalgia, and what of it is the essential, authentic, and totally real bond that ties humans together across life and death and time and distance?