Carl Sagan Quotes

If you look at Earth from space you see a dot, that's here. That's home. That's us. It underscores the responsibility to deal more kindly and compassionately with one another and to preserve and cherish that pale blue dot, the only home we've ever known.

I grew up in this business... A lot of my life has been centered around this question about how NASA is helping us to understand our own home planet... and to understand our place in the universe.

This planet seems to be in such sorry shape. And I can't ever think about the rest of the universe without coming back home and thinking what the implications for life here would be if we were to really have some definitive proof of extraterrestrial life.

For me, the Earth had always been a kind of a safe haven, you know, where I could go to work or be in my home or take my kids to school. But I realized it really wasn't that. It really is its own spaceship. And I had always been a space traveler.

When you are up there, feeling infinite space, the earth looks like a fragile planet against the immense universe. We are just another fleeting species, passing by. I do believe there is life elsewhere, and we are not alone. But not having found an alternate place for now, it is crucial to take care of the one place we do have.

You see billions and billions of stars and recognize that you know some of those have planets, too, and maybe there's life out there, and this is just one of billions of galaxies... and so it gives you this huge perspective of how far we potentially have to go for real exploration.

A tiny blue dot set in a sunbeam. Here it is. That's where we live. That's home. We humans are one species and this is our world. It is our responsibility to cherish it. Of all the worlds in our solar system, the only one so far as we know, graced by life.

Who'd want a pony when you could have the whole universe? It was far more interesting and you didn't have to muck it out once a week.

One day very soon, we'll be asked: what did we do. And we will say: we did everything we could... we have to... because if we don't there won't be anyone left to ask. We have never faced a crisis this big, that we have never had better ideas to solve. This is our only home. We can choose today to make a world of difference.

About two million years ago, man appeared. He has become the dominant species on the earth. All other living things, animal and plant, live by his sufferance. He is the custodian of life on earth, and in the solar system. It's a big responsibility.

There's water on Mars, and there's life beyond Brussels.

Planet colonization is not a short term concern of mine. The physical limitations of space travel render it low on the list for me.

Every observation that we make, every mission that we send to various places in the solar system is just taking us one step further to finding that truly habitable environment, a water-rich environment.

We have a responsibility to look after our planet. It is our only home.

Astronomy is one of the sublimest fields of human investigation. The mind that grasps its facts and principles receives something of the enlargement and grandeur belonging to the science itself. It is a quickener of devotion.

Religions have a special responsibility to encourage and inspire people to love planet earth, which as far as we know, is the only place in the cosmos that works in such a harmonious way that it can support intelligent life.

We must act now and wake up to our moral obligations. The poor and vulnerable are members of God's family and are the most severely affected by droughts, high temperatures, the flooding of coastal cities, and more severe and unpredictable weather events resulting from climate change. We, who should have been responsible stewards preserving our vulnerable, fragile planet home, have been wantonly wasteful through our reckless consumerism, devouring irreplaceable natural resources.

This planet below you is our campsite, and you know of no other campground.

For the most part, only the light characters travel. Who are you that have no task to keep you at home?

Incidentally, the creationists that I've encountered diligently deny that our Earth's climate is being altered by people. This point of view and teaching is in absolutely no one's best interest. Here's hoping we can work together and preserve the Earth, for us - us humans.

You get out there in space and say to yourself: that's home. That's the only home we have, and the only one we're going to have for a long time

Looking at the sky last night and the moon in the first fresh dark, just a few stars, bright with their cold flares, I had a little crumpled thought, 'Oh well, the moon. It's just another place like California.' One's imagination drags its feet as we are inexorably hauled into the future.

Do you ever wonder if--well, if there are people living on the third planet?' 'The third planet is incapable of supporting life,' stated the husband patiently. 'Our scientists have said there's far too much oxygen in their atmosphere.

I am sitting here 93 million miles from the sun on a rounded rock which is spinning at the rate of 1000 miles an hour... and my head pointing down into space with nothing between me and infinity but something called gravity which I can't even understand, and which you can't even buy any place so as to have some stored away for a gravityless day.

As we looked up in silence to those distant lights, we were reminded that it was a rare imagination which first taught that the stars are worlds, and had conferred a great benefit on mankind.