This revised and expanded ninth edition is based on The Economist's own house style manual and is a boon for everyone who wants to communicate with the clarity, style, and precision for which The Economist is renowned. As the introduction says, "clarity of writing usually follows clarity of thought." The Style Guide gives general advice on writing, points out common errors and clichés, offers guidance on consistent use of punctuation, abbreviations, and capital letters and contains an exhaustive range of reference material—covering everything from accountancy ratios and stock market indices to laws of nature and science.