the Thoreau Log. 25 March 1842. Concord, Mass. Thoreau writes in his journal: Great persons are not soon learned, not even their outlines, but they change like the mountains in the horizon as we ride along (Journal, 1:347-349). Log Index Log Pages Select... 1817-1832183318341835183618371838183918401841184218431844184518461847184818491850185118521853185418551856185718581859186018611862