We can never have enough of Nature.

Rivers must have been the guides which conducted the footsteps of the first travelers. They are the constant lure, when they flow by our…

— Henry David Thoreau

Who ever saw his old clothes, - his old coat, actually worn out, resolved into its primitive elements, so that it was not a…

— Henry David Thoreau

Let us spend one day as deliberately as Nature, and not be thrown off the track by every nutshell and mosquito's wing that falls…

— Henry David Thoreau

We accept it as normal that people who have never been on the land, who have no history or connection to the country, may…

— Wade Davis

We are upsetting the atmosphere upon which all life depends. In the late 80s when I began to take climate change seriously, we referred…

— David Suzuki

There is no drop of water in the ocean, not even in the deepest parts of the abyss, that does not know and respond…

— Rachel Carson

In our attempt to make conservation easy, we have made it trivial.

— Aldo Leopold

Professionalism is environmental. Amateurism is anti-environmental. Professionalism merges the individual into patterns of total environment. Amateurism seeks the development of the total awareness of…

— Marshall McLuhan

Nuclear power as a solution to global warming is theoretically possible, but the proliferation problems and accident risks it would create would, I think,…

— Arjun Makhijani

One tragic example of the loss of forests and then water is found in Ethiopia. The amount of its forested land has decreased from…

— Al Gore

I am optimistic globally. So many scientists are working frantically on the reparation of our planet. Unfortunately there are countries who are still destroying…

— Steve Irwin

Sara Scherr and Jeff McNeely have given us a thoughtful, sensible book about a topic of great importance to the world. There is no…

— Ismail Serageldin

The government should set a goal for a clean environment but not mandate how that goal should be implemented.

— Dixie Lee Ray

It is important to allow a broad debate on energy and climate. We must urgently explore realistic ways to address the different scientific, technical…

— Lennart Bengtsson

All our efforts to defeat poverty and pursue sustainable development will be in vain if environmental degradation and natural resource depletion continue unabated.

— Kofi Annan