This is a link to speech delivered by Randall Grahm at UC Berkeley on 1/21/06. I thoroughly enjoyed reading it.
The Phenomenology of Terroir
Excerpt: Terroir is a composite of many physical factors – soil structure and composition, topography, exposition, microclimate as well as more intangible cultural factors. Matt Kramer once very poetically defined terroir as “somewhere-ness,” and this I think is the nub of the issue. I believe that “somewhereness” is absolutely linked to beauty, that beauty reposes in the particulars; we love and admire individuals in a way that we can never love classes of people or things. Beauty must relate to some sort of internal harmony; the harmony of a great terroir derives, I believe, from the exchange of information between the vine-plant and its milieu over generations. The plant and the soil have learned to speak each other’s language, and that is why a particularly great terroir wine seems to speak with so much elegance.