The book explores timeless questions - What does it mean to live well? How do we understand our place in the cosmos? What kind of future can we co-create? Through vivid case studies ranging from Everest and the Aral Sea to the Voyager spacecraft and Keynes' letter to his grandchildren. It proposes a "Sagan Scale" to measure civilizational maturity not by energy use, but by wisdom, empathy, and stewardship.

In an age of planetary-scale technologies and existential risk, Modern Humanism offers a bold, integrative framework for living wisely and compassionately. Blending scientific insight, ethical reflection, and the creative arts, Kai Taraporevala invites readers into a humanist conversation shaped by evolutionary biology, behavioral science, ecology, and philosophy.

Structured across five conceptual domains, Modern Humanism moves from foundational questions to practical consequences and visionary futures. It is a call to courage, creativity, and ethical responsibility - a civilizational rite of passage for our time.