Carl Sagan Quotes

If we are still here to witness the destruction of our planet some five billion years or more hence, then we will have achieved something so unprecedented in the history of life that we should be willing to sing our swansong with joy - Sic Transit Gloria Mundi.

With respect to phenomena like mass extinction, somebody might say why worry about it because in a geological perspective mass extinctions aren't so bad, they wipe out some things and then 10 million years down the road we get new and interesting objects.But I tell you mass extinctions are really awful for folks caught in the midst of them.

In five billion years, the sun will expand and engulf our orbit as the charred ember that was once Earth vaporizes. Have a nice day

Ten million years from now, when then sun burns out and the Earth is just a frozen iceball hurtling through space, nobody's going to care whether or not I got this guy out.

A million million years gives us some time to prepare for the end . . . let us make the best of it.

There is good reason to believe that we have already entered the Sixth Extinction, a period of destruction of species on a massive scale, comparable to the Fifth Extinction 65 million years ago, when three-quarters of the species on earth were destroyed, apparently by a huge asteroid.

Eventually, the Sun will swell to occupy the entire sky as its expansion subsumes the orbit of earth. Earth's surface temperature will rise until it matches the 3,000-degree rarified outer layers of the expanded Sun.... But not to worry. We will surely go extinct for some other reason long before this scenario unfolds.

When you look at Earth from that one picture, the one from space, it's really a rather attractive thing. I have nothing against the planet per se. I root for the big comet or asteroid as a way of cleansing the planet. The comet or asteroid 65 million years ago is probably what gave us our opening to replace the reptiles. The greatest entertainment I have in my life is chronicling internally, not necessarily for the public, the slow dissolution of order.

We'll be eight degrees hotter in ten -- not ten, but thirty or forty years, and basically none of the crops will grow. Most of the people will have died and the rest of us will be cannibals.

Nothing's ever the same," she said. "Be it a second later or a hundred years. It's always churning and roiling. And people change as much as oceans.

Unfathomable Sea! whose waves are years, Ocean of Time, whose waters of deep woe Are brackish with the salt of human tears! Thou shoreless flood, which in thy ebb and flow Claspest the limits of mortality! And sick of prey, yet howling on for more, Vomitest thy wrecks on its inhospitable shore, Treacherous in calm, and terrible in storm, Who shall put forth on thee, Unfathomable sea?

I said that the oceans were sick but they're not going to die. There is no death possible in the oceans - there will always be life - but they're getting sicker every year.

The planet will not survive another hundred years of the same state of consciousness that produced the external effects of recent history.

Men are weak now, and yet they transform the Earth's surface. In millions of years their might will increase to the extent that they will change the surface of the Earth, its oceans, the atmosphere, and themselves. They will control the climate and the Solar System just as they control the Earth. They will travel beyond the limits of our planetary system; they will reach other Suns, and use their fresh energy instead of the energy of their dying luminary.

The space that we're looking through is nine-dimensional. If you build a mathematical model, the amount of searching that we've done in 50 years is equivalent to scooping one 8-ounce glass out of the Earth's ocean, looking and seeing if you caught a fish. No, no fish in that glass? Well, I don't think you're going to conclude that there are no fish in the ocean. You just haven't searched very well yet. That's where we are.

It will not be humans who watch the sun's demise, six billion years from now. Any creatures that then exist will be as different from us as we are from bacteria or amoebae.

If you're not religious, then look at it this way. This world of ours is four thousand, six hundred million years old. It could end in an afternoon.

The coast is an edgy place. Living on the coast presents certain stark realities and a wild, rare beauty. Continent confronts ocean. Weather intensifies. It's a place of tide and tantrum; of flirtations among fresh- and saltwaters, forests and shores; of tense negotiations with an ocean that gives much but demands more. Every year the raw rim that is this coast gets hammered and reshaped like molten bronze. This place roils with power and a sometimes terrible beauty. The coast remains youthful, daring, uncertain about tomorrow. The guessing, the risk; in a way, we're all thrill seekers here.

In vain have oceans been squandered on you, in vain the sun, wonderfully seen through Whitman’s eyes. You have used up the years and they have used up you, and still, and still, you have not written the poem.

When the polar ice caps melt, my recording studio will rise up like an ark, and I'll float off into the drowned world like a character from a J.G. Ballard novel.

Yes, twenty-seven million in slavery is a lot of people, but it is just .0043 percent of the world's population. Yes, $23 billion a year in slave-made products as services is a lot of money but it is exactly what Americans spent on Valentine's Day in 2005. If humans trafficking generates $32 billion in profits annually, that is still a tiny drop in the ocean of the world economy.

There's a part of me that wants to go streak and run outside and jump around and go swim in the ocean and do everything. The other part of me wants to bear down and repeat this kind of performance next year and in the years to come.

The Earth would only have to move a few million kilometers sunward-or starward-for the delicate balance of climate to be destroyed. The Antarctic icecap would melt and flood all low-lying land; or the oceans would freeze and the whole world would be locked in eternal winter. Just a nudge in either direction would be enough.

With the Gulf spill, I absolutely merged in the time when I had that infection. I couldn't get out of the Gulf spill. There were so many similarities: the drains and the siphoning and the tubes. And also in the way the earth was hurt, the ocean was bleeding. Remember the video cams of the oil gushing? I couldn't stop watching that.

Our planet has been around only for four and a half billion years. Let's imagine a planet that has life on it such as life is on Earth and it's seven billion years old. Let's say that planet evolved intelligence. Well, that intelligence would be way more advanced than what we call intelligence here on Earth. How long has intelligence been around on Earth as we've come to define it?