is liable to meet some objection to his presence or some discourteous treatment; and the ties of friendship or memory seldom are strong enough to hold across the color line.' Du Bois goes on to illustrate this by discussing various social contexts in which the black American is faced with social dilemmas as to whether or not to enter white-dominated spaces: to not enter is to be "blamed for indifference", but to do so means "he is liable to have his feelings hurt and get into unpleasant altercation". In his 1903 book The Souls of Black Folk, Du Bois used the phrase in his introduction, titled "The Forethought", writing: "This meaning is not without interest to you, Gentle Reader; for the problem of the Twentieth Century is the problem of color line". The phrase occurs again in the book's second essay, "Of the Dawn of Freedom", at both its beginning and its end. At the outset of the essay, Du Bois writes: "The problem of the twentieth century is the problem of the color-line—the relation of the darker to the lighter races of men in Asia and Africa, in America and the islands of the sea". At the end of the essay, Du Bois truncates his statement to: "The problem of the twentieth century is the problem of the color-line", the more frequently quoted version of the sentiment. Ample nuance exists among the three versions of Du Bois’ prediction in The Souls of Black Folk, as within a very short amount of text Du Bois provides the reader with three incarnations of the thought. Some of the difference may be the result of the original serialization of the work, as parts of this book were originally serialized, many in The Atlantic Monthly. The first reference draws the reader in with a direct reference, while the second goes so far as to identify all of the areas in the world where Du Bois believed the color-line was "the problem of the twentieth century". All imply, whether directly or passively, that the color-line extends outside the bounds of the United States. Du Bois’ changing attitude toward the phrase Many decades later, in 1952, nine years before he moved to Ghana, Du Bois wrote an essay for Jewish Life magazine about his experiences during a trip to Poland and his changing attitude toward his phrase "the color-line". In the short essay, entitled "The