An excerpt from section 101 of Walt Whitman’s prose series “Specimen Days” will appear next year as part of the NYC Transit Authority’s “Train of Thought” subway ad series, NY Times reports. A year and a half ago, “Train of Thought” — which consists of literary quotations posted in subway cars — replaced the “Poetry in Motion” poem-excerpt series. Whitman will be represented by some pared down version of this quote: 

Future years will never know the seething hell and the black infernal background of countless minor scenes and interiors, (not the official surface courteousness of the Generals, not the few great battles) of the Secession war; and it is best they should not—the real war will never get in the books.