[para 4:] To many, this last assertion is proof of his advanced eccentricity. But let’s give him his due: anyone who has climbed every one of New Hampshire’s 4,000-foot peaks, as the springy 69-year-old Souter reportedly has done, knows a kind of exhilaration that his black-robed colleagues in the tidal basin will never know.
How strange is it, really, to want another taste of the savage winds atop Mount Washington before the knees go bad?
tidal basin = n. A body of water in an area subject to tides whose water level is maintained at a desired level by artificial means.
Although I tried consulting a dictionary, I don't understand what is implied about the US Supreme Court?