It has become appallingly obvious that our technology has exceeded our humanity.

Nothing will benefit human health and increase chances for survival of life on Earth as much as the evolution to a vegetarian diet.

Every one of us is precious in the cosmic perspective. If a human disagrees with you, let him live. In a hundred billion galaxies, you will not find another.

I was taught that the human brain was the crowning glory of evolution so far, but I think it’s a very poor scheme for survival. 27 December 1987

All civilizations become either spacefaring or extinct.

Human beings will be happier — not when they cure cancer or get to Mars or eliminate racial prejudice or flush Lake Erie — but when they find ways to inhabit primitive communities again. That’s my utopia. Interview 1973

I am absolutely convinced that no wealth in the world can help humanity forward, even in the hands of the most devoted worker in this cause. The example of great and pure characters is the only thing that can produce fine ideas and noble deeds. Money only appeals to selfishness and always tempts its owners irresistibly to abuse it. Can anyone imagine Moses, Jesus, or Gandhi armed with the money-bags of Carnegie?

We're terrible animals. I think that the Earth's immune system is trying to get rid of us, as well it should. On humans, September 2005.

I have to say this in defense of humankind: No matter in what era in history, including the Garden of Eden, everybody just got there. And, except for the Garden of Eden, there were already all these crazy games going on, which could make you act crazy, even if you weren’t crazy to begin with. Some of the games that were already going on when you got here were love and hate, liberalism and conservatism, automobiles and credit cards, golf and girls’ basketball.
Even crazier than golf, though, is modern American politics, where, thanks to TV and for the convenience of TV, you can only be one of two kinds of human beings, either a liberal or a conservative.

War is a defeat for humanity.

When you wonder about the mystery of yourself, look to Christ, who gives you the meaning of life. When you wonder what it means to be a mature person, look to Christ, who is the fulfillness of humanity. And when you wonder about your role in the future of the world look to Christ.

Humanity should question itself, once more, about the absurd and always unfair phenomenon of war, on whose stage of death and pain only remain standing the negotiating table that could and should have prevented it.