I have lately been surveying the Walden woods so extensively and minutely that I now see it mapped in my minds eye - as, indeed, on paper - as so many mens wood-lots, and am aware when I walk there that I am at a given moment passing from such a ones wood-lot to such anothers. I fear this particular dry knowledge may affect my imagination and fancy, that it will not be easy to see so much wildness and native vigor there as formerly.
Henry David Thoreau