This book entitled "Developing a Legal, Ethical, and Socially Responsible Mindset for Sustainable Leadership" is about leadership and values, in particular the values of legality, morality, and social responsibility and their application in a modern global business environment. A business leader today must engage in sustainable leadership, which encompasses, in addition to making sound economic and financial decisions, acting legally based on the law, morally based on ethics, and also in a socially and environmentally responsible manner. Adherence to these values will result in a sustainable business, organization, community, society, and planet. This book defines, differentiates, explains, and illustrates these values as well as their application to business. Although the focus of this book is on the business world, the values and principles explicated herein are relevant to leadership in the public sector and other professions. The "mindset" for sustainable leadership adduced and emphasized by the authors is for the leader contemplating a decision to ask three key questions: Is it legal? Is it moral? And what should a socially responsible firm or organization be doing for sustainable leadership? Reflecting on these questions and acting in an appropriate manner based on legality, morality and social responsibility will lead to long-term value creation and competitive advantages - personal, business, organizational - and sustainable success.