"The central environmental question hasn't changed in the 56 years since the first Earth Day: how do we persuade civilization to operate within the limits of a living planet? Regen360 offers thoughtful, provocative, pragmatic answers. David Gottfried doesn't moralize; he analyzes. He gives us code — fifteen Earth Code equations, nestled in a framework called HOPE.  At this bleak moment in our planet's history, hope is just what we need."

— Denis Hayes, founder of Earth Day; President Emeritus, Bullitt Foundation 

“David Gottfried isn't offering yet another roadmap for incremental improvement — he's asking whether the operating system beneath our progress was ever designed to solve the problem. As someone who's covered sustainability for nearly four decades, that question lands hard. Regen360 is what happens when someone who helped build the green building movement steps back and interrogates his own life's work with total honesty. It's essential reading for the journey forward.”

— Joel Makower, Chairman and Co-founder, Trellis Group

“Design is the first signal of human intention. In Regen360, David Gottfried seeks not merely to solve today’s problems, but to imagine a different design for tomorrow. For more than three decades, David has been an important voice in the green building movement, and here he invites us to move beyond doing ‘less bad’ toward creating ‘more good’ — cultivating the conditions in which people, communities, and all life can thrive.”

— William McDonough, author of The Hannover Principles and co-author of Cradle to Cradle

"I've known David Gottfried since college, and watched him build movements most people thought were impossible. Regen360 is his most honest book yet — part memoir, part systems manifesto, part father's reckoning with what his daughter's generation is inheriting. He's not selling optimism. He's offering an operating system. That distinction matters, and so does this book."

– Chip Conley, New York Times bestselling author and founder of MEA

"David Gottfried has spent his career changing how the world builds. In Regen360 he goes further, asking what it would take to run civilization itself on a different operating logic — one that puts the health of life on Earth first. His HOPE framework is both a scientific argument and a moral one, and the book carries it with the candor of memoir. A generous, clear-eyed map for anyone serious about the regenerative transition ahead."

— Gretchen Daily, Bing Professor of Environmental Science, Stanford University

"Over twenty years ago, David Gottfried unified a disparate coalition of experts to forge a common language for sustainability, fundamentally reshaping the global building industry. His impact on my early career and our shared environment was immense. Today, he interrogates the core logic of our economic systems, questioning their alignment with planetary health. In Regen360, you will discover a work that is as deeply authentic, inquisitive, and compelling as David himself."

— Jean Rogers, PhD 

Founder and former CEO, Sustainability Accounting Standards Board

David Gottfried has long challenged the building and construction industry to think bigger, and Regen360 does exactly that - questioning whether current systems can deliver outcomes equal to the magnitude of the sustainable transformation ahead. It shows that the next phase depends not only on reframing the problem, but on accelerating solutions we already know are possible by aligning mindsets, capital and action at scale.

– Cristina Gamboa, CEO, World Green Building Council

“In Regen360, David Gottfried asks us to be fully present, with all dimensions of our being, to support the essential sustaining conditions for personal and planetary regeneration. He offers a visionary yet practical regenerative operating system RegenOS that aligns organizations, technologies, markets, communities, and individual decisions with living systems. Regen360 courageously strings together intimate personal experience and a profound commitment to a world that works for all of life."

— Stuart Cowan, Ph.D., Executive Director of Buckminster Fuller Institute

"In Regen360, David Gottfried makes a powerful connection between personal and planetary healing. Through honest reflection on his own life, he shows how fear often leads us to hide difficult truths—from ourselves, from one another, and from the systems we create. In my experience building environmental certification systems, credible certifications can be useful tools for building trust. Yet David goes a step further. He shows us that honesty is the essential first step toward meaningful regeneration. Regen360 is a timely call for the candor, integrity, and stewardship needed to build a healthier relationship between humanity and the Earth."

— Doug Gatlin, CEO Green Seal

"In Regen360, David Gottfried dismantles the superficial structures of corporate success to reveal the elemental truths we once understood as children in the wild. By weaving together raw personal narrative, scientific inquiry, and spiritual depth with his profound green building mastery, David interrogates the systemic failures of our extractive economy. He doesn't just diagnose the misalignment; he provides a civilizational operating system and a set of practical, regenerative behaviors to restore both our inner selves and our planetary home. Far from a technical manual, this is a deeply accessible invitation for us to return to a more authentic way of being."

 — Mick Dalrymple, LEED Fellow

Chief Sustainability Officer, University of Southern California

"After years of watching incremental sustainability gains eclipsed by systemic extraction, Regen360 has completely re-energized my outlook. David Gottfried masterfully pairs raw personal honesty with structural precision to deliver the exact civilization-level code upgrade we’ve been waiting for. It is a remarkable, deeply hopeful blueprint that will proudly guide the next generation toward a truly regenerative future."  

– Eric Corey Freed, Regenerative Architect & Director of Sustainability, CannonDesign

“David has spent a lifetime working to transform the built environment. What I appreciate most about Regen360 is his willingness to celebrate how far the green building movement has come while honestly acknowledging how far we still have to go. He reminds us that true performance is measured not only by technical metrics, but by whether our buildings, and the systems behind them, actually create healthier conditions for people and the planet. In doing so, he challenges us to better align our intentions with outcomes. Regen360 is a deeply thoughtful book that will engage practitioners, educators, and students alike, inviting the reflection and dialogue needed to shape a more regenerative future.”

—   Gail Brager, Professor of Building Science, Technology & Sustainability, University of California, Berkeley