Edward de Bono: Teach Yourself to Think, Penguin 1996

Edward de Bono is the true master of mega-simplification. It is astonishing to note how much one can learn from thinking from this book, even if you consider yourself a professional "thinker" (like I do). The book, like always with de Bono, is written for the general public, and once again, he is doing a great job in promoting his reader to think and to think anew.