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.

Look again at that dot. That's here. That's home. That's us. On it everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives. The aggregate of our joy and suffering, thousands of confident religions, ideologies, and economic doctrines, every hunter and forager, every hero and coward, every creator and destroyer of civilization, every king and peasant, every young couple in love, every mother and father, hopeful child, inventor and explorer, every teacher of morals, every corrupt politician, every "superstar", every "supreme leader", every saint and sinner in the history of our species lived there — on a mote of dust suspended in a sunbeam.

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

The great moral teachers of humanity were, in a way, artistic geniuses in the art of living.

All civilizations become either spacefaring or extinct.

You must not lose faith in humanity. Humanity is an ocean; if a few drops of the ocean are dirty, the ocean does not become dirty.

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

Whether humanity will consciously follow the law of love, I do not know. But that need not disturb me. The law will work just as the law of gravitation works, whether we accept it or not. The person who discovered the law of love was a far greater scientist than any of our modern scientists. Only our explorations have not gone far enough and so it is not possible for everyone to see all its workings.

Many persons have inquired concerning a recent message of mine that ‘a new type of thinking is essential if mankind is to survive and move to higher levels.’ Often in evolutionary processes a species must adapt to new conditions in order to survive. Today the atomic bomb has altered profoundly the nature of the world as we know it, and the human race consequently finds itself in a new habitat to which it must adapt its thinking. In light of new knowledge…an eventual world state is not just desirable in the name of brotherhood, it is necessary for survival. ..Today we must abandon competition and secure cooperation. This must be the central fact in all our considerations of international affairs; otherwise we face certain disaster. Past thinking and methods did not prevent world wars. Future thinking must prevent wars.

Everyone is aware of the difficult and menacing situation in which human society -- shrunk into one community with a common fate – now finds itself, but only a few act accordingly. Most people go on living their every-day life: half frightened, half indifferent, they behold the ghostly tragi-comedy which is being performed on the international stage before the eyes and ears of the world. But on that stage, on which the actors under the floodlights play their ordained parts, our fate of tomorrow, life or death of the nations, is being decided.

All my actions have their rise in my inalienable love of mankind.

Ann Druyan suggest an experiment: Look back again at the pale blue dot of the preceding chapter. Take a good long look at it. Stare at the dot for any length of time and then try to convince yourself that God created the whole Universe for one of the 10 million or so species of life that inhabit that speck of dust. Now take it a step further: Imagine that everything was made just for a single shade of that species, or gender, or ethnic or religious subdivision. If this doesn't strike you as unlikely, pick another dot. Imagine it to be inhabited by a different form of intelligent life. They, too, cherish the notion of a God who has created everything for their benefit. How seriously do you take their claim?

We have heard the rationales offered by the nuclear superpowers. We know who speaks for the nations. But who speaks for the human species? Who speaks for Earth?

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.

Although September 11 was horrible, it didn't threaten the survival of the human race, like nuclear weapons do.

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?

Our time is distinguished by wonderful achievements in the fields of scientific understanding and the technical application of those insights. Who would not be cheered by this? But let us not forget that human knowledge and skills alone cannot lead humanity to a happy and dignified life. Humanity has every reason to place the proclaimers of high moral standards and values above the discoverers of objective truth. What humanity owes to personalities like Buddha, Moses, and Jesus ranks for me higher than all the achievements of the enquiring and constructive mind. What these blessed men have given us we must guard and try to keep alive with all our strength if humanity is not to lose its dignity, the security of its existence, and its joy in living. Written statement (September 1937).

The end of the human race will be that it will eventually die of civilization.

As our own species is in the process of proving, one cannot have superior science and inferior morals. The combination is unstable and self-destroying.

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.

A really great man is known by three signs— generosity in the design, humanity in the execution, moderation in success.

I don't think the human race will survive the next thousand years, unless we spread into space. There are too many accidents that can befall life on a single planet. But I'm an optimist. We will reach out to the stars.

War is a defeat for humanity.