In the face of unprecedented global challenges like poverty and climate change, can individuals make a difference? This book reveals what motivates people to devote their time and energies to addressing social, environmental and ethical issues. Based on in-depth research among corporate sustainability and responsibility (CSR) professionals, it shows the pivotal role of values, inspiration, expertise, empowerment, strategic thinking and social contribution among "purpose-inspired leaders". Using extensive illustrative quotations, different types of CSR change agents are identified, including experts, facilitators, catalysts and activists. The implications for business of better understanding these CSR leaders is explored, as well as the opportunities for future academic research. The book concludes with a call to personal action by making a positive difference and leaving a meaningful legacy.