"I hesitated a long time before writing a book on woman," De Beauvoir begins. "The subject is irritating, especially for women; and it is not new. Enough ink has flowed over the quarrel about feminism; it is now almost over: let's not talk about it anymore." This was in 1959—and the sentiment is as fresh now as it was then, just like (most of) the rest of De Beauvoir's lucid book, equal parts literary and philosophical. All else aside, it's one of the most classic feminist texts in the language. And men should read more of those.