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