[close] William Knowlton Zinsser (born October 7, 1922) is a writer, editor, and teacher. He began his career as a journalist for the New York Herald Tribune, where he worked as a feature writer, drama editor, film critic, and editorial writer, and has been a longtime contributor to leading magazines.

Throughout the 1970s, Zinsser taught writing at Yale University where he was master of Branford College. He served as executive editor of the Book-of-the-Month Club from 1979 to 1987. He now lives in New York City, his hometown, and teaches at The New School and the Columbia University Graduate School of Journalism.

His 17 books include On Writing Well, which is in the seventh edition; Writing to Learn; Mitchell & Ruff (originally published under the title Willie and Dwike); Spring Training; American Places; Easy to Remember: The Great American Songwriters and Their Songs; and most recently, Writing About Your Life.

In his books, Zinsser emphasizes word economy. Author James J. Kilpatrick, in his book The Writer's Art says that if he were limited to just one book on how to write, it would be William Zinsser's On Writing Well. Adds Kilpatrick, "Zinsser's sound theory is that 'writing improves in direct ratio to the number of things we can keep out of it.'"
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