Some people wait for grey hair in the hope that this will automatically impart wisdom. Others will read Edward de Bono's Textbook of Wisdom, which is not a discussion about wisdom but a presentation of 'thinking tools', guidelines and principles. 'Wisdom', suggests de Bono, 'is the art with which perception crafts experience to serve our values.' It is founded on confidence rather than arrogance, forever open to the power of new possibilities, and ways to leap the barriers between 'now' and 'then'. It means using values and emotions to guide our lives without allowing them to enslave us. The traditional thinking methods designed by the 'Gang of Three' (Socrates, Plato and Aristotle) are too harsh, too judgemental and too lacking in constructive creativity to cope with a complex and changing world. Edward de Bono recognizes that our brains deserve and demand that we do better with them, and uses his gift for clarity and simplicity to get readers' thoughts to flow along fresh, contemporary lines.