Albert Einstein (2015). “Bite-Size Einstein: Quotations on Just About Everything from the Greatest Mind of the Twentieth Century”, p.15, St. Martin's Press
"Letter from a Region of My Mind" by James A. Baldwin in "The New Yorker" (November 17, 1962), republished as "Down at the Cross: Letter from a Region in My Mind" in James A. Baldwin "The Fire Next Time", 1963.