THE HUMAN BRAIN - BOON OR BANE ? Mother Nature gave the human being a big brain with a well-functioning conscious mind. The brain endowed the human being with his Ego and his culture, his rationality - but also his irrationality. The human brain - boon or bane? The little book is trying to give an answer to this question: reduced to the essentials, always scientifically precise, yet to be easily understood. The seven chapters of the book complement each other just like a mosaic into a comprehensible image of the human being and his world. In this way, it can also serve as a useful orientation support in our media age suffering from information overflow.