In an era marked by polarization and social fracture, kindness and compassion are increasingly treated as liabilities rather than strengths. A Kinder World challenges this assumption, reminding us that human evolution and progress have been driven not by competition alone, but by collaboration, empathy, and care. To build a healthy, resilient, and sustainable future, philosopher Ingrid Leman Stefanovic argues that society must renew a shared ethos of kindness, both individually and collectively. Dispelling the myth that kindness signals weakness, Stefanovic critiques the “selfish gene” narrative and reconsiders the roles of aggression and competition in human development. The book demonstrates instead how moral integrity, social justice, basic civility, and human progress are reinforced through the practice of kindness. These values find expression not only in interpersonal relationships, but also in social and cultural norms, environmental ethics, and the design of our towns and cities. Positioning kindness as a guiding principle for the good life, A Kinder World also offers practical pathways for cultivating it in an increasingly unkind world. Drawing on educational tools and behavioural strategies, the book shows that kindness is not naïve or incidental, but a deliberate practice – and the enduring foundation of human flourishing.