Wangari Maathai at the Svalbard Global Seed VaultWangari Maathai attends the opening of the Svalbard Global Seed Vault in Norway. On February 26, 2008, the Kenyan environmentalist inaugurated the vault carved into the Arctic permafrost and filled with samples of the world’s most important seeds, providing a Noah’s Ark of food crops in the event of a global catastrophe. (photo: Hakon Mosvold Larsen/AFP/Getty Images)

Wangari Maathai received the Nobel Peace Prize in 2004 in recognition of her environmental and human rights work and linking sustainable management of resources, good governance, and equitable distribution with peace. She founded the Green Belt Movement, a grassroots project that has planted over 45 million trees across Kenya since the 1970s and worked mostly with women.

She is a global leader on issues affecting millions of people in Africa and around the world: desertification, global warming, sustainable ecology, and human rights. Wangari Maathai first appeared on our program in 2006 in “Planting the Future” and has since published her new book, Replenishing the Earth: Spiritual Values for Healing Ourselves and the World, in 2010. She agreed to respond to some of our questions by email:

You indicate that your religious beliefs were not what motivated you to begin your work with the Green Belt Movement in it earliest days, but that your Christian background and faith have always been important, and that at one time you were surprised that so many people seem not to have spiritual values that shape their thoughts and actions. Those spiritual values seem to inform so much of who you Replenishing the Earth by Wangari Maathaiare and what you do. And in Replenishing the Earth you talk about concern for our “inner ecology” as well as the ecology of the planet. Can you say more about this “inner ecology” and why it matters?

The “inner ecology” is the sense of wonder that we all have, especially as children about the world around us. But it is also the simple fact that our inner constitution is part and parcel of the environment around us. We need air to breathe and water to drink and food to sustain us. The environment that surrounds us directly provides us — physically and spiritually — with its bounty. If the outer environment is sick, then we become sick, not only physically because we are drinking impure water, or breathing polluted air, or not eating enough or consuming poorly produced food, but because we are psychologically and spiritually diminished.

You credit your Catholic education, and the various orders of nuns who were in charge of your education over time, with instilling in you an engagement with the scientific method and the use of critical thinking. Some people might find that surprising. How do you engage with people who insist that religion and science are incompatible and cancel each other out?

Science and religion are both means of discovering deeper truths about the world and the universe and our role within both. Science tries to answer the question “How?” Religion tries to answer the question “Why?” My science teachers did not seem to have a problem between their faith and pursuit of science.

Beyond that, the scientific endeavor and the practice of faith both require discipline, attention, and honesty. I engage with people of faith and scientists regularly, and I have never found it to be a problem. The more we know from science, the more we realize that there is so much we do not know. Faith will not give us the scientific answers and sometimes we have to walk both paths apart. However we believe this earth came to be, abusing it and destroying its ecosystems will ultimately bring about our end as well as destroy what the people of faith call God’s Creation.

Your book has some captivating chapters that focus on trees — what they mean to us both in practical as well as religious and aesthetic terms, and how trees themselves have at various times been seen as centers of sacredness, of our connection to spiritual knowledge and to the divine. If trees disappear from the face of the earth, among the many other serious and life-threatening consequences, we risk losing sacredness itself. You write that the “battle for control over the meaning of the spiritual landscape is an ancient one.” Can you say more about this battle over meaning?

Every society throughout history has sought to interpret the world that surrounds it, and as I say in my book, very many cultures have revered the tree as a symbol of that society’s connection to the Source. I also write in my book that since time immemorial cultures have known that one way to subdue another people is to cut down the sacred groves of that people’s culture — in short, to destroy their beliefs so they will not have anything to fight for.

I was intrigued to read that many temples, churches, and other centers of worship were situated over sacred sites of previous cultures. I had a similar experience in my own culture as Christianity was being introduced and churches were often built at sites of the form of worship that was being replaced.

This suggests to me that trees, groves, and forests have had a profound impact in the spiritual and physical life of peoples. They give meaning to mysteries and to life. They proJust Seeds Poster Celebrating Wangari Maathaivide a connection between a people and their Source, hence their sacredness. In the course of the history of humanity, this largely spiritual landscape has been important to control in order to be able to control the people and their resources.

You point out that religious leaders have a role to play in creating scriptural interpretation and theology that support an essentially ecological point of view. Are faith traditions doing enough in this regard? What more could they do?

I don’t want to single out religious leaders, per se; after all, every one of us has a role to play in fostering healthy ways of healing the earth. And all of us have a set of positive values that could be drawn upon to make our lives more sustainable and conscious. I talk about these values in Replenishing the Earth.

I think I would ask religious traditions to challenge people to find solutions to their problems here on this earth, to acknowledge the wonderful gift of life on a beautiful planet that has been given to us and of which we should be good stewards. Yes, of course, we may wish to look forward to life after death. But when I am asked about heaven, I suggest that it might be green — a place of clean rivers with trees growing on the banks, fresh air, and all of nature’s bounty on display.

And then I ask myself: Why can’t we have such a life on this planet, right now? What is preventing us from cleaning our rivers, breathing fresh air, or growing food in abundance? Why do we have to wait until we get to heaven? The answer is almost always because we, ourselves, are doing things that are making that impossible: cutting down trees so that the rivers are silted with topsoil, producing greenhouse gases through burning fossil fuels, desertifying our pastures, and so on.

That said, the religious leaders have a special role because they are the ones who interpret the holy scriptures to the faithful and they ought to encourage the faithful to be custodians and caretakers of God’s Creation.

Many people become hopeless contemplating the widespread devastation of the earth. How would you counsel them to remain hopeful?

My view has been that one must always be hopeful, because hopelessness is a luxury we cannot afford. In Replenishing, I talk about the story of a hummingbird, which, though small, did what it could to try to put out a fire in the forest by carrying water in its tiny beak. The bigger animals, who were standing by in despair laughed at the hummingbird, taunted him saying: “What good do you think you can do? The fire is too strong and you are too small.” The hummingbird replied, “I’m doing the best I can.”

That’s all I ask of myself, and that’s all I can ask of anyone — that they do the best they can. But they must do — and not stand around waiting for someone else to step forward. So, I would counsel: Whatever you think you can do, start doing it. Whatever it is, commit yourself to it. If you don’t know what it is, then try various things until you discover your passion. Waiting around will only allow the fire to burn; acting together we have a chance to put it out.


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Trees give us air, shade, fruit and nuts, and a visible sign of weather conditions. God must have loved trees very much, because, before man was, a tree is. Temples are built of wood and stone, but man is made of spirit and has it within his powers to be a savior. Jesus proved this.

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