The Art of Clear Thinking is a book by the Swiss writer Rolf Dobelli who describes in his book the most common thinking mistakes that are prepared to avoid making them. The book was originally a weekly article in the leading newspapers in Germany, the Netherlands and Switzerland, and later was collected in German-language books. The book has been in the top ten of Der Spiegel's bestseller list in Germany for 800 consecutive weeks and has been translated into many languages. Along with Germany and Switzerland, the book has been on the top ten bestseller lists in the United Kingdom, South Korea, India, Ireland and Singapore.