One of the undoubted highlights of the book 'Professional Investor Rules' is the chapter by Paul Jourdan, AAA-rated fund manager and CEO of Amati Global Investors. A highly pellucid and thought-provoking piece, it takes an unflinching look at what it means to be a successful investor engaged in the "living and strangely intelligent organism" of today's financial markets -- the importance of self-knowledge, the vital role of history and stories, and the limits of certainty that every investor must come to terms with. This eBook exclusively reproduces the chapter as a standalone piece. It remains a striking and provocative piece of essential reading for every investor.