It is a delight to share the publication of The Philosophy of Public Health by CPEMPH co-Director, Professor Benjamin Smart of the University of Johannesburg. This is an important and timely book which exemplifies the best of applied philosophical thinking: it identifies deep conceptual problems that arise in real-world contexts, and uses rigorous philosophical tools to reach conclusions that can guide public health practice.

At its core, the book develops a powerful account of health as a property of complex systems. Rather than treating health as a feature of isolated organs or discrete individuals, Ben argues that health is an emergent, capacities-dependent property instantiated at multiple biological and social levels: cells, organs, organisms, and—crucially—populations. This move allows him to dissolve familiar puzzles about “population health” and to provide a framework that aligns far more closely with what public health professionals actually confront.

A second major contribution concerns the goal of public health. Ben rejects the simplistic idea that public health should merely raise aggregated individual health scores, noting that such metrics neglect inequality, autonomy, and the broader social determinants of health. Instead, he argues that public health should aim to increase the capacities that matter for individuals’ ability to realise the goods of life—capacities that range from access to clean water and functioning healthcare systems, to education, mobility, and the structural conditions required for dignified living.

The book also provides a philosophically grounded defence of Evidence-Based Public Health that is sensitive to context, values, and the limitations of traditional hierarchies of evidence. Ben engages seriously with recent failures in global pandemic response, arguing for a more nuanced and context-aware understanding of what it means to “follow the science”.

In the final chapters, he turns to ethics and the question of decolonising public health, offering a principled but pragmatic framework for navigating public health decision-making across profoundly unequal societies. Throughout, the book is shaped by his decade of experience living and working in South Africa, but its arguments travel far beyond this context.

The result is a work that will influence both philosophers and practitioners. It is a rare example of philosophy that is simultaneously conceptually rigorous, policy-relevant, and deeply humane. I could not be more pleased to see it in print, and I recommend it warmly to anyone working in public health, philosophy of medicine, or the conceptual foundations of health policy.

Congratulations, Ben.