Franklin Roosevelt was very concerned about environmental issues.

The fate of the living planet is the most important issue facing mankind.

The bigger the population gets, the more serious the problems become... We have to address the population issue. The United Nations, with the U.S. supporting it, took the position in Cairo in 1994 that every country was responsible for stabilizing its own population. It can be done. But in this country, it's phony to say 'I'm for the environment but not for limiting immigration.'

Teddy Roosevelt of course was a great outdoorsman all his life.

The most important environmental issue is one that is rarely mentioned, and that is the lack of a conservation ethic in our culture.

Our goal is not just an environment of clean air and water and scenic beauty. The objective is an environment of decency, quality and mutual respect for all other human beings and all other living creatures.

There is a great need for the introduction of new values in our society, where bigger is not necessarily better, where slower can be faster, and where less can be more.