In general, any productive activity which introduces substances foreign to the natural environment runs a considerable risk of polluting it.

If environmentalism is a fad, it will be the last one.

Nothing can survive on the planet unless it is a cooperative part of larger global life.

The environmental crisis is somber evidence of an insidious fraud hidden in the vaunted productivity and wealth of modern, technology-based society. This wealth has been gained by rapid short-term exploitation of the environmental system, but it has blindly accumulated a debt to nature-a debt so large and so pervasive that in the next generation it may, if unpaid, wipe out most of the wealth it has gained us.

Everything is connected to everything else. Everything must go somewhere. Nature knows best. There is no such thing as a free lunch.

The environmental crisis is a signal of this approaching catastrophe.

In nature, no organic substance is synthesized unless there is provision for its degradation; recycling is enforced.