1st Edition
The Gardener of Governance A Call to Action for Effective Internal Auditing
This book builds on the popular GARDENER OF GOVERNANCE article, which enjoys amazing traction in the professional community globally and has been translated into 25+ languages. The Lenz and Jeppesen (2022) thought-piece introduced the 5 "Ps" as paths for the betterment of internal auditing: People, Public, Performance (Prosperity), Purpose (Profession) and Planet. These main fields of action and focus for the internal audit profession may determine the future role of internal auditing, its legitimacy, relevance and significance. The book aims to provide practical guidance for performing impactful internal audit assignments. Some readers will no doubt view the authors as unorthodox and the book may be a stretch for the purist, insisting on adherence to traditional rules.
It is pleasing to see that the new Global Internal Audit Standards advocate a pragmatic and holistic approach, which should further stimulate internal audit functions moving into uncharted territory that may require from them to become more resourceful in their approach as advocated for by the authors. This book is an inspiration and encouragement for all internal auditors who want to do better and aim higher, particularly the forthcoming generation of internal auditors who are open-minded and who may sometimes doubt themselves because of opposition or insecurity. We believe that internal auditors who absorb the knowledge and make it their own will benefit from this book on their career trajectory.
This easy read is relatable, engaging and convincing to support internal auditors globally who are seeking to widen their repertoire on their journey to become modern and effective internal auditors. This book is relevant and will be insightful to internal auditors, students and lecturers, as well as other stakeholders including senior and executive managers and board members. Drawing on Rainer’s vast practical expertise gained from over 300 audits in more than 50 countries, along with his series of publications and adding Barrie’s hands-on advice benefitting from 30 years of entrepreneurial experience, the authors create an interesting blend of creative authoring that challenges the status quo and advises emerging internal auditors on becoming more impactful and effective.
We’re dropping the pebble in the pond. Let’s see how far the ripples spread and to what effect.
PREFACE. ABOUT THE AUTHORS. ACKNOWLEDGEMENTS. INTRODUCTION. CHAPTER 1 - The 1st P is about PEOPLE. CHAPTER 2 - The 2nd P is about the PUBLIC’s perceptions. CHAPTER 3 - The 3rd P is about PERFORMANCE. CHAPTER 4 - The 4th P is our PURPOSE. CHAPTER 5 - The 5th P is our PLANET. EPILOGUE.
Biography
Dr. Rainer Lenz, Corporate Audit and Financial Expert, University Lecturer, and Mentor
LinkedIn: https://www.linkedin.com/in/rainerlenz/
Google Scholar: https://lnkd.in/euwxX5yZ
Positive, high energy and hands-on leader. Finance and corporate audit professional with 30+ years of international experience as Regional/Divisional CFO and Chief Audit Executive in global organizations. Since 2007, Chief Internal Auditor with 300+ assignments in 50+ countries. PhD in Economics and Management Science from the Louvain School of Management in Belgium. Teaching Governance and Internal Auditing at the Johannes Gutenberg University Mainz (Germany). Awardee (5) as Global Internal Audit Thought Leader (by Richard Chambers). Winner of the Global IIA’s 2023 Bradford Cadmus Memorial Award. Author of a series of articles in peer reviewed journals.
Barrie describes Rainer as “Passionate and energetic, freely sharing his knowledge of and insights into the internal audit profession - a wild thinker, provocative, and he continuously challenges the status quo, which is the hallmark of a true thought leader. He was the first internal auditor I encountered who has these qualities”.
Barrie Enslin, Founder, Managing Director – Pro Optima Audit Services (Pty) Ltd (Pro Optima)
Bachelor of Accounting Science (North-West University, Potchefstroom, South Africa) - 1984
Certified Internal Auditor (TheIIA) – 1993
https://www.linkedin.com/in/barrie-enslin-6934621b/
Barrie has five years of accounting and 35 years of internal audit experience, both in South Africa and internationally. He identified the need for operational audits in the mining industry and decided in 1997 to start Pro Optima. Five of the eight biggest mining companies in South Africa now count under Pro Optima’s clients. Services provided include internal audit outsourcing and co-sourcing, second line assurance services, business process analysis, and other consulting work. Pro Optima has contributed over 2.5 billion South African Rands (ZAR), i.e., ±USD 170 million (considering exchange rate fluctuations) in quantified value added to its clients, with approximately 40% of its projects showing significant quantified value adding, mostly recoupment and prevention of overpayments to vendors and institutions, reduced pricing, curbing of wasteful spending, and improved efficiencies.
Rainer describes Barrie as follows: “The Pro Optima success story is attributable to the team leveraging on the often-unexploited power of internal auditing. Barrie is pragmatic, does not stick to the script, and aspires to seek a fine and healthy balance between a systematic approach and the freedom to be creative. I believe Pro Optima’s unorthodox approach is key in providing the much-needed value adding services to its clients.”
Rainer and Barrie met first at the ECIIA 2019 conference in Luxemburg. Rainer was speaking about “WRAPS - How to make better decisions.” The duo soon realized their views on internal auditing were very similar and identified the need for practical guidelines to effective internal auditing, which they started with in January 2024. While writing this book it became even clearer how similar their thinking is. Although they did not agree beforehand about any of the specific content, their contributions dovetail superbly.
The Gardener of Governance by Rainer Lenz and Barrie Enslin offers a valuable guide for internal auditors aiming to go beyond traditional compliance. The book highlights interpersonal skills, collaboration, and governance innovation, helping auditors shape healthier workplace cultures and contribute strategically. Essential reading for audit and governance professionals seeking to make an impact.
- Hervé Gloaguen, Former Allianz Group CAE and CCO
This fascinating book could scarcely be appearing at a more opportune time. Internal auditing is at an inflection point. On the threshold of a perfect storm of threats to its future, it is under siege from increasingly fragmented patterns of institutional accountability; from ruthless pressures to divert internal auditing down pathways that serve commercial interests rather than the public good; and from a prevailing intellectual exhaustion characterized by algorithmic thinking and a checklist mindset that numbs creativity. Above all, it faces the existential dangers of a takeover by artificial intelligence and machine learning.
Out of the bleak landscape of today’s internal auditing, The Gardener of Governance emerges like a thunderbolt, offering a startling and powerful means of reform for a profession on the threshold of crisis. As adumbrated in a briefer form in an influential 2022 article “The Future of Internal Auditing: Gardener of Governance” by Lenz and Jeppesen (EDPACS, 66:5), the internal audit profession is challenged to consider the ramifications of the authors’ 5 P’s model (People, Public, Performance, Purpose, and Planet). The authors’ pathway for an evolution of internal auditing might, if implemented, go far beyond merely rescuing the profession of internal auditing by shoring up its relevance – it offers a restoration of its grimly eroded mission of serving the public good. Each of the 5 P’s is rich in ideas and suggestions, from how to deal with a toxic work culture to reflections on the true significance of the term “assurance”.
This visionary, courageous, and prophetic book merits the attention of the internal auditing community. The gardening metaphor has already captured the hearts of many internal auditors: it implies a thoughtful nurturing and evolution of a profession that has lost its way. It liberates the internal auditor from outdated, hackneyed ways of thinking. Even the sanctity of the “three lines model” and the quasi-religious reverence for ESG concepts are placed under careful scrutiny. The authors are not shy about rocking the boat of received opinion.
What Lenz and Enslin are proposing in The Gardener of Governance seems to me to be possibly the last chance to reform internal auditing (or, perhaps more precisely, the Institute of Internal Auditors’ brand of internal auditing) from within, before society imposes major changes or insists on alternative governance mechanisms. Moreover, the book is a delight to read, with an engaging tone. Take your time to digest this book’s contents - it packs a lot of wisdom between its covers.
- David J. O'Regan, Auditor General at WHO/PAHO, Washington D.C
This book offers a huge amount of energy to internal auditors who suffer the struggles of their daily tasks.
Two seasoned internal auditors, who have been in this role for decades, not only share their own lessons learned and experiences of how internal auditors can become better in doing their job. But the authors go much further than that: they advise internal auditors to stretch their role. That there is more.
The authors invite internal auditors to reflect and come to action. To pioneer.
To my view, the main contribution of the book is however, that it sparks internal audit professionals to more fundamentally rethink their role and their contribution. By doing so, it is also stretching boundaries. Whether or not you agree with all the positions that are taken by the authors, `I am convinced that this helps critical reflections, discussion and growth of the profession. My appreciation as well as doubts can be best described as internal auditors that are part of the football game in their organization.
Internal auditors are traditionally seen as the goalkeepers (‘third line’) of their organizations, who are recognized for their important safes and appreciated when they rescue the team. Like goalkeepers do, internal auditors contribute to team success and can make the difference between winning and losing. In today’s turbulence, internal auditors and goalkeepers have much more to offer than being just a lock on the door for two or three times per game. They are part of the team, they can boost team performance and especially they interact with the other players. The good goalkeeper not only thinks defensively, but also thinks offensively and helps the team to build up from behind. The solid goalkeeper can make other players feel comfortable and be creative. Make the team perform best.
My interpretation of the book is that it provides many detailed ingredients that can spark internal auditors to get out of their comfort zone and encourage them to really help their team. I appreciate that the authors give so many examples of how internal auditors can do this. And indeed, some of them feel provocative and might be stretching far beyond the traditional role of the internal auditor. We all know of the goalkeepers who cross the whole field in the dying seconds of a match in order to help their team attacking. Leaving their own goal empty. The authors coin that internal auditors could have a central role in the organization and play an important role as strategic trusted advisors. I very much like such thought-provoking exercises. Not necessarily that all internal auditors should play such role, but as an invitation to think what competences it requires to play such role, and whether internal auditors can do all of this without leaving their own goal empty.
To my opinion the authors have shared a lot of detailed professional experience in the book and they very well provide food for discussion of how internal auditors could extend their role and contribution. Therefore, I would warmly encourage internal audit professionals to read it and even more: to discuss it.
- Prof. Arno Nuijten, Erasmus School of Accounting and Assurance, Erasmus University Rotterdam
This book is dedicated to all the 'crazy auditors' out there. I support all voices advocating for different perspectives and alternative narratives of what internal audit is or could be.
In these times of constant change and complexity, voices like Rainer Lenz and Barrie Enslin are essential.
- Manja Knevelbaard, Partner ACS Insight, The Netherlands
“The Gardener of Governance" by Dr. Rainer Lenz and Barrie Enslin is a breath of fresh air in the world of internal auditing. More than a typical guide, it feels like a thoughtful conversation with seasoned experts who challenge the status quo and inspire auditors to become truly impactful. In the first chapter, Lenz and Enslin emphasize the human element, showing how internal auditors can foster healthy workplace cultures through strong interpersonal relationships and critical thinking. I found this focus on people is refreshing, reminding us that governance is not just about policies, but about creating environments where individuals and teams thrive. The authors introduce the "Think!" concept, a simple yet powerful tool that encourages auditors to reflect on their behaviors and interactions—immediately improving communication and collaboration. From the broader role of auditors as nurturers of workplace cultures (Chapter 1) to practical tasks that push them beyond compliance (Chapter 2), Lenz and Enslin map out a transformative journey for the profession.
What makes this book stand out is its seamless transition from high-level principles, like fostering leadership and relational skills, to actionable steps that can elevate an auditor’s career. By encouraging critical thinking and self-awareness, the "Think!" concept helps auditors position themselves not only as compliance officers but as strategic partners and influencers in governance.
The book is packed with practical advice, guiding readers through innovative approaches like integrated assurance models and creative audit techniques, such as the dynamic in-and-out audits explored in Chapter 4. These strategies empower internal auditors to think beyond traditional frameworks and adopt more flexible, impactful methods that enhance their effectiveness and influence within organizations. Their approach is both visionary and practical, illustrated through compelling case studies that demonstrate how internal audit functions can truly reshape organizations. In Chapter 3, they show how auditors can elevate performance and efficiency, moving beyond routine tasks to make a measurable impact. By Chapter 5, the focus shifts to how auditors can play a pivotal role in promoting sustainable governance, especially in tackling ESG challenges.
In short, this book is a must-read for any internal auditor who aspires to not only survive but also thrive in their career. Lenz and Enslin offer both the inspiration, and the practical roadmap needed to turn auditors into key players in governance, capable of adding value and driving positive change in today’s complex business landscape.
- Dr. Suhaily Shahimi, Senior lecturer, Coordinator of Internal Audit Education Provider (IAEP) at University of Malaya, Associate Editor of Asian Journal of Accounting Perspectives
The authors will need little introduction to many, and both are very experienced internal auditors.
Many will also have heard a lot about the ‘Gardener’ concept over recent years, particularly if you are a regular on LinkedIn, or vaguely aware of what is being discussed at internal audit conferences, webinars and through associated publications.
The book develops the Gardener philosophy and is primarily structured around five P’s - People, Public, Performance (Prosperity), Purpose (Profession), and Planet. Together these form the core of the call to action.
Some may have other views on whether these P’s work (why not A’s, I love A’s?!) but if you do, put your pen to paper (or ask Chat GPT) and you too can write a book too, I guess! I’m certain that Dan Swanson and EDPACS would be delighted to hear from you as well.
The five chapters contain material from both authors, although there is a lot more content by one than the other. The style and nature of both are very different. You may prefer one to the other. Or one chapter more than another. You may vigorously nod with some of what is stated, or find yourself sighing, tutting or shaking your head.
Such is the nature of books structured in this way.
I like it.
There is some new and interesting thinking in here, for sure.
However, a lot of the subject material is not especially new and has been regularly discussed and debated in internal audit circles for many, many years. And not just by the authors. But it is certainly useful and helpful to see many of the topical issues of the (internal audit) day being discussed in one place.
Well done to the authors for creating the means to achieve this!
And it’s also good to see the Global Internal Audit Standards™ being name-checked throughout.
I’d have personally liked to have seen a bit more on artificial intelligence (et al.) and where it fits into the authors’ thinking, their views of internal audit, and the direction of the profession as a whole. It receives scant mention, and I was left wanting more.
I feel that artificial intelligence is arguably the biggest - and most challenging - subject for the internal audit profession today. It is critical that we get our collective heads around this and address. At pace.
I’m sure both authors have got more they could contribute to the current internal audit debates in this space, and it would have been to have seen the Gardeners’ plough this furrow a little further.
Despite this observation, there is a lot of very good, topical content in here.
If you simply want a checklist or a bunch of dos and don’ts, then this book is probably not for you. There’s a bit of this, but not much. If you want something to read, ponder, read some more and think about what kind of internal auditor you want to be and want kind of internal audit service you want to deliver, then I’m sure this book will give you plenty of ideas to consider.
Some you may like, and some you won’t.
But it may make you think – something the authors care a lot about.
And I agree. Thinking is critical for an internal auditor, even with the increasing assistance of artificial intelligence!
In the Book Summary, the authors say: “We’re dropping the pebble in the pond. Let’s see how far the ripples spread and to what effect. Having read this book, I am sure that the ripples will spread far and why.
To what effect?
That depends - at least in part - on what anyone reading this then does. I hope you will be inspired to do SOMETHING after reading this.
And finally, in the Epilogue the authors state that “We started this book by saying, this is NOT just another book about internal audit…”
I agree that this is NOT just another book about internal audit.
It’s a jolly good - and thought-provoking - book about internal audit. And the profession. And more than a little bit more.
Enjoy!
I certainly did.
Well done indeed to the authors on helping the garden to flourish that bit more!
- John Chesshire CFIIA. Owner, JC Audit Training Ltd/Internal Auditor/Audit Committee Member (et al.)
Rainer and Barry’s book titled The Gardener of Governance brilliantly encapsulates how Internal Auditing is akin to Gardening for Governance (be it a large plot of land or be it a large organization).
Just like Gardening which involves the laying out and care of a plot of ground devoted to the growing of plants such as flowers, herbs, or vegetables, Internal Auditing is a refined and evolved profession, practice, process, art and science for effective Governance.
An organization / garden in its ornamental sense needs a certain level of civilization before it can flourish. Wherever that level has been attained, in all parts of the world and at all periods, people have made efforts to shape their environment into an attractive display. Similar to the Gardening processes of tending plants through timely and necessary attention to the seasonal changes, and to the myriad small “events” in any shrubbery or herbaceous border, improves their understanding and appreciation of gardens in general. Large areas of gardening development and mastery have concentrated on persuading plants to achieve what they would not have done if left in the wild and therefore “natural” state. Gardens at all times have been created through a good deal of control and what might be called interference. The gardener attends to a number of basic processes: combating weeds and pests; using space to allay the competition between plants; attending to feeding, watering, and pruning; and conditioning the soil. Above this fundamental level, the gardener assesses and accommodates the unique complex of temperature, wind, rainfall, sunlight, and shade found within his own garden boundaries. A major part of the fascination of gardening is that in problems and potential no one garden is quite like another; and it is in finding the most imaginative solutions to challenges that the gardener demonstrates artistry and finds the subtler levels of satisfaction.
In the book, R & B have superbly captured the vital role played by IA (with several examples) in the areas of five Ps which are the very foundation of organizations.
An amazing perspective and a must read for all Internal auditing evangelists ! Superbly written , extremely rich perspectives and examples! Am sure that all the crazy internal auditors are going to love this ❤️
- Bhaskar Subramanian. Board Member, Past President IIA India, Trustee -Global Internal Audit Foundation, Seasoned Management Professional, Ex-Tata Capital Ltd., Ex-Hindustan Unilever Ltd.
The Gardener of Governance is an inspiration not only for seasoned Auditors but also for Board Members and Executives who value governance, compliance, and performance - and who appreciate an engaging and thought-provoking read that leads to meaningful introspection. It invites, and at times provokes, a rethinking and redefinition of responsible and effective leadership.
Corporate failures or underperformance manifest in many forms, but they often stem from deficiencies in governance, experience, ethical common sense, personal integrity, or even sanity - compounded by external challenges of our times (or any time). Achieving better results requires us to act differently. The Gardener of Governance offers more than just “food for thought”:
A. The book is profoundly theoretical yet highly practical, presenting a balanced relationship between the two. It echoes Kappler’s 1988 insight: “Only practice contains all theory.”
B. Its exploration of “human Authentic Intelligence” (hAI) alongside “robotic Artificial Intelligence” (rAI) provides a timely reflection on the evolving relationship between humans and technology - especially in leadership and auditing.
C. The 5P framework - people, public, performance, purpose, and planet - offers a holistic guide to navigating leadership and governance with confidence and purpose.
D. Questioning and critical thinking are foundational to auditing (and leadership), rooted in the Latin audire - “to hear.” Though this may seem obvious, the art of questioning, active listening, and deep thinking is increasingly underutilized.
E. “Authenticity” stands as a central anchor, alongside “logic” and “empathy.” This approach introduces the self into the reflective auditing (and leadership) process, transforming it from an aseptic, tick-the-box exercise into a deeply personal and meaningful engagement.
F. The book’s practicality is further grounded in real-life phenomena, such as “Lana’s purge journal.” Curious about what that entails? You’ll have to read the book to find out!
The Gardener of Governance is a call to action for those committed to better governance and leadership.
- Richard Gerstenberg, Board Member and Audit Chair at Weleda AG, Switzerland
LinkedIn: https://www.linkedin.com/in/richardgerstenberg/
Not Just Another Book on Internal Audit!
I wholeheartedly recommend The Gardener of Governance by Rainer Lenz and Barrie Enslin to every professional in internal auditing and corporate governance. This book doesn’t just revisit well-trodden paths—it boldly redefines the internal audit profession as a strategic enabler of trust, integrity, and cultural transformation.
The authors masterfully argue that internal auditing transcends processes, risks, and controls; it’s about cultivating relationships and fostering a thriving organizational culture. As they put it, “The gardener of governance doesn’t just inspect the soil; they nurture the roots of trust and transparency to help organizations flourish.”
The innovative 5 P’s model—People, Public, Performance, Purpose, and Planet—provides a holistic framework for elevating the internal audit function. In an age of artificial intelligence and automation, we don’t need humans who behave like robots. Strong human skills—such as authenticity, awareness, honesty, consistency, sincerity, and curiosity—are more crucial than ever. The authors emphasize that these qualities are the cornerstone of effective auditing, enabling auditors to build trust and drive meaningful change.
If your internal audit function isn’t helping your organization thrive, maybe it’s time to ask: Are you nurturing the roots—or just pruning the weeds? This book will guide you toward finding the answer.
- Paulina A. Pietrasik, Risk Management & Internal Audit professional, CIA, CRMA
Enterprise Risk Management and Internal Controls Director at Polpharma
