The new megatrends of the 21st century imply a fundamental challenge for the global economy. As a result, sustainability has become an unavoidable topic, and thus the relationship of human society and the economy to the natural environment. Sustainable development is a complex goal that has aspects of convergence and competitiveness. The necessary turnaround includes the acceleration of the green and digital transition and everything that can improve the economy's ability to create value. This comprehensive set of questions inspired the birth of the booklet. The Green Booklet of Sustainability – a holistic guide to achieve a sustainable path for society & economics provides a theoretical framework and interpretive reflection of the writings on sustainability of György Matolcsy, Governor of Magyar Nemzeti Bank, including the introduction of steps taken by the Hungarian National Bank for sustainability.