But the only possible guarantee of the future is responsible behavior in the present.

What leads to peace is not violence but peaceableness, which is not passivity, but an alert, informed, practiced, and active state of being.

If you don't know where you are, you don't know who you are.

The only true and effective "operator's manual for spaceship earth" is not a book that any human will ever write; it is hundreds of thousands of local cultures.

... it is not a crisis of our environs or surroundings; it is a crisis of our lives as individuals, as family members, as community members, and as citizens. We have an 'environmental crisis' because we have consented to an economy in which by eating, drinking, working, resting, traveling, and enjoying ourselves we are destroying the natural, god-given world.

What I stand for is what I stand on.

We don't have a right to ask whether we're going to succeed or not. The only question we have a right to ask is what's the right thing to do? What does this earth require of us if we want to continue to live on it?