Carl Sagan Quotes

We're all interested in life outside of Earth. We all have a fascination with what's out there because we don't really know.

With science fiction I think we are preparing ourselves for contact with them, whoever they may be.

As long as the plots keep arriving from outer space, I'll go on with my virgins.

The big lesson of planetary science is when you do a first reconnaissance of a new kind of object, you should expect the unexpected.

There are many, many books I've read and I think this is quite naïve actually because we all just try to uncover something. But the universe at large is full of questions that we still don't know anything about and there will be always young people brilliant who are going to make new discoveries.

The problem here is that a civilization that is 1,000 light years away doesn't know we exist. They don't know that we have radio telescopes here on Earth because they see Earth as it was 1,000 years ago. Nothing can travel faster than light, so however good their instruments they can't see in affect the future. So there is no particular reason they should be sending us messages at this time.

What were we doing here? Traveling hundreds or thousands of light-years, to break our hearts?

We cannot understand what happens in the universe. What is glorious in it is united with what is full of horror. What is full of meaning is united to what is senseless. The spirit of the universe is at once creative and destructive — it creates while it destroys and destroys while it creates, and therefore it remains to us a riddle. And we must inevitably resign ourselves to this.

He had seen too much of the cosmos to have any great faith in man's ability to understand it.

The universe has no sides, no end, can't be mapped. Enough to make a man talk about God, make a man superstitious and worship an idol. The science never gets as far as the strangeness.

I got fascinated by the idea that our universe itself is comprised mostly of dark matter and dark energy. Things that we can't perceive at all, and we've only discovered that relatively recently. So it's almost as if our universe is the foam on the ocean of things that we can't see, or know, or perceive, and yet we feel the affects of those things right and left.

Where the light is, and each thing clear,Separate from all others, standing in its place,I drink the time and touch whatever's near,And hope for day when the whole world has that face:For what assures her present every year?In dark accidents the mind's sufficient grace.

The most important thing to remember about depression is this: you do not get the time back. It is not tacked on at the end of your life to make up for the disaster years. Whatever time is eaten by a depression is gone forever. The minutes that are ticking by as you experience the illness are minutes you will not know again.

Mia and I had been together for more than two years, and yes, it was a high school romance, but it was still the kind of romance where I thought we were trying to find a way to make it forever, the kind that, had we met five years later and had she not been some cello prodigy and had I not been in a band on the rise - or had our lives not been ripped apart by all this -I was pretty sure it would've been.

I started blogging in 2004, light years ago on the Web.

Mars is empty now. Five hundred years from now, it'll be full of people.

Most of the Pyramids were observatories in perfect alignment. Some Pyramids were aligned so that the sun would hit them at a certain time of the year. And yet, it could rain all year, and not a drop of rain could get inside. No one covered the hole. So that took some high intelligence to line a thing up so that the exact time of year when the sun was in the exact position, it would light up the inside of that crypt.

When we gaze at a star in the Milky Way which is 50,000 light-years away from our sun, we are looking back 50,000 years in time." "The idea is much too big for my little head." "The only way we can look out into space, then, is to look back in time. We can never know what the universe is like now. We only know what it was like then. When we look up at a star that is thousands of light-years away, we are really traveling thousands of years back in the history of space.

Once upon a time, this moment - this last light of the evening the day before the race - was the best moment of the year for me. The anticipation of the game to come. But that was when all I had to lose was my life.

In terms of the most astonishing fact about which we know nothing, there is dark matter and dark energy. We don't know what either of them is. Everything we know and love about the universe and all the laws of physics as they apply, apply to four percent of the universe. That's stunning.

I will light candles this Christmas, Candles of joy, despite all sadness, Candles of hope where despair keeps watch. Candles of courage where fear is ever present, Candles of peace for tempest-tossed days, Candles of grace to ease heavy burdens. Candles of love to inspire all my living, Candles that will burn all the year long.

Even light, which travels so fast it takes most races thousands of years to realize that it travels at all, takes time to journey between the stars.

Perhaps wars weren't won anymore. Maybe they went on forever. Maybe it was another Hundred Years' War.

Even if our efforts of attention seem for years to be producing no result, one day a light that is in exact proportion to them will flood the soul.