Lisa Cohen, assistant professor of English, is the author of All We Know: Three Lives, published by Farrar, Straus and Giroux in July 2012. The book is 448 pages and includes 52 illustrations and notes. In All We Know, Cohen describes three women’s glamorous choices, complicated failures, and controversial personal lives with lyricism and empathy. Esther Murphy was a brilliant New York intellectual who dazzled friends and strangers with an unstoppable flow of conversation. But she never finished the books she was contracted to write—a painful failure and yet a kind of achievement. The quintessential fan, Mercedes de Acosta had intimate…