At a mere buck (eighty cents after Amazon's discount!) this book should be owned, and more importantly, read, by every single American -- no, every person who can read English. It is profound and brilliant, and deep and complex enough that you will discover something new each time you read it. People say those sorts of things about books all the time but with this book it's actually true. If only the ideas of Emerson, Thoreau, and their group had been widely accepted, we would live in a very different, and I think much better, country.
P.S. Maybe it's just me, but I tend to be skeptical of reviews by people who use words like 'cognitive' without knowing what they mean.