“A hundred years ago, there were one-and-a-half billion people on Earth. Now, over six billion crowd our fragile planet. But even so, there are still places barely touched by humanity.”— David Attenborough
“What is called for is a new humanism, one that is not defined by the limits of the city, but by the limits of the planet.”— William Irwin Thompson
“It's surely our responsibility to do everything within our power to create a planet that provides a home not just for us, but for all life on Earth.”— David Attenborough
“We've been given a sacred responsibility to steward the planet, and we can't go on treating it like we're just in a hotel room that we can just trash and move on to the next one.”— Ron Perlman
“We’re trying to figure out, what are the things you would really want to have in a planetary system to give life its best chance?”— Margaret Turnbull
“If we are to have a stable, prosperous and peaceful world, we must have a healthy planet.”— Gaylord Nelson