Finding quotes online is precarious. I have taken the following though from quite reliable Internet sources.

But man is a part of nature, and his war against nature is inevitably a war against himself. (Rachel Carson)

The boundaries of the skin are not the boundaries of the self. (Arne Naess)

 It really boils down to this: that all life is interrelated. We are all caught in an inescapable network of mutuality, tied into a single garment of destiny. Whatever affects one destiny, affects all indirectly. (Martin Luther King Jr.)

He who knows what sweets and virtues are in the ground, the waters, the plants, the heavens, and how to come at these enchantments, is the rich and royal man. (Ralph Waldo Emerson)

Like winds and sunsets, wild things were taken for granted until progress began to do away with them. (Aldo Leopold)

 Our task must be to free ourselves … by widening our circle of compassion to embrace all living creatures and the whole of nature and its beauty. (Albert Einstein)

 The use of sea and air is common to all; neither can a title to the ocean belong to any people or private persons, forasmuch as neither nature nor public use and custom permit any possession therof. (Elisabeth I of England)

 Earth provides enough to satisfy every man’s need, but not every man’s greed. (Gandhi)

 To halt the decline of an ecosystem, it is necessary to think like an ecosystem. (Douglas Wheeler)

 We will look upon the earth and her sister planets as being with us, not for us. (Mary Daly)

I know that our bodies were made to thrive only in pure air, and the scenes in which pure air is found. (John Muir)

We cannot interfere in one area of the ecosystem without paying due attention to both the consequences of such interference in other areas and to the well-being of future generations. (Pope John Paul II)

 When we see land as a community to which we belong, we may begin to use it with love and respect…. That land is a community is the basic concept of ecology, but that land is to be loved and respected is an extension of ethics. (Aldo Leopold)

Technological progress is not identical with human progress. (Pope Francis)

“We abuse land because we regard it as a commodity belonging to us. When we see land as a community to which we belong, we may begin to use it with love and respect.” (Aldo Leopold)

 “Our modern industrial economy takes a mountain covered with trees, lakes, and running streams and transforms it into a mountain of junk, garbage, slime pits, and debris.” (Edward Abbey)

“…the universe, by definition, is a single gorgeous celebratory event.” (Thomas Berry)

 “The present is not a time for desperation but for hopeful activity.” (Thomas Berry)

 We are the generation with the awareness of a great danger. We are the ones with the responsibility and the ability to take steps of concrete action, before it is too late. (Dalai Lama)

Environmentally friendly cars will soon cease to be an option … they will become a necessity. (Fujio Cho, Chairman of Toyota Motors)