Arthur C. Clarke

When an official declares something false, chances are that it is. When he or she says it is absolutely false, chances are it is true. ... The overemphasis sticks out like Pinocchio's nose.

If children have interests then education happens.

Space can be mapped and crossed and occupied without definable limit; but it can never be conquered. When our race has reached its ultimate achievements, and the stars themselves are scattered no more widely than the seed of Adam, even then we shall still be like ants crawling on the face of the Earth. The ants have covered the world, but have they conquered it — for what do their countless colonies know of it, or of each other?
So it will be with us as we spread out from Earth, loosening the bonds of kinship and understanding, hearing faint and belated rumors at second — or third — or thousandth hand of an ever dwindling fraction of the entire human race. Though the Earth will try to keep in touch with her children, in the end all the efforts of her archivists and historians will be defeated by time and distance, and the sheer bulk of material. For the numbers of distinct human societies or nations, when our race is twice its present age, may be far greater than the total number of all the men who have ever lived up to the present time.
We have left the realm of comprehension in our vain effort to grasp the scale of the universe; so it must ever be, sooner rather than later.

The Ramans do everything in threes.

The greatest tragedy in mankind's entire history may be the hijacking of morality by religion.

Finally, I would like to assure my many Buddhist, Christian, Hindu, Jewish, and Muslim friends that I am sincerely happy that the religion which Chance has given you has contributed to your peace of mind (and often, as Western medical science now reluctantly admits, to your physical well-being). Perhaps it is better to be un-sane and happy, than sane and un-happy. But it is the best of all to be sane and happy. Whether our descendants can achieve that goal will be the greatest challenge of the future. Indeed, it may well decide whether we have any future.

We cannot predict the new forces, powers, and discoveries that will be disclosed to us when we reach the other planets and set up new laboratories in space. They are as much beyond our vision today as fire or electricity would be beyond the imagination of a fish.

The intelligent minority of this world will mark 1 January 2001 as the real beginning of the 21st century and the Third Millennium.

"... we have a situation in which millions of vehicles, each a miracle of often unnecssary complication, are hurtling in all directions under the impulse of anything up to 200 horsepower. Many of them are the size of small houses and contain a couple of tons of sophisticated alloys — yet often carry a single passenger. They can travel at a hundred miles an hour, but are lucky if they average forty. In one lifetime they have consumed more irreplaceable fuel than has been used in the whole previous history of mankind. The roads to support them, inadequate though they are, cost as much as a small war; the analogy is a good one, for the casualties are on the same scale."

I've been saying for a long time that I'm hoping to find intelligent life in Washington ... I'm reasonably sure there must be life in this solar system, on Mars or on Europa, and other places. I think life is probably going to be ubiquitous, though we still don't have any proof of that yet — and still less, any proof of intelligent life anywhere. But I hope that will be coming in the next decade or so through radio astronomy or, perhaps, the discovery of objects in space which are obviously artificial. Astronomical engineering — that may be the other thing to look for.

In my time I’ve been very fortunate to see many of my dreams come true! Growing up in the 1920s and 1930s, I never expected to see so much happen in the span of a few decades. We "space cadets" of the British Interplanetary Society spent all our spare time discussing space travel — but we didn’t imagine that it lay in our own near future… I still can't quite believe that we've just marked the 50th anniversary of the Space Age! We’ve accomplished a great deal in that time, but the "Golden Age of Space" is only just beginning. Over the next 50 years, thousands of people will travel to Earth orbit — and then, to the Moon and beyond. Space travel — and space tourism — will one day become almost as commonplace as flying to exotic destinations on our own planet.

I can never look now at the Milky Way without wondering from which of those banked clouds of stars the emissaries are coming. If you will pardon so commonplace a simile, we have set off the fire alarm and have nothing to do but to wait.
I do not think we will have to wait for long

When, however, the lay public rallies round an idea that is denounced by distinguished but elderly scientists and supports that idea with great fervor and emotion — the distinguished but elderly scientists are then, after all, probably right.

All explorers are seeking something they have lost. It is seldom that they find it, and more seldom still that the attainment brings them greater happiness than the quest.

If the house is to be demolished tomorrow anyhow, people seem to feel, we may as well burn the furniture today. None of our problems are insoluble...But it seems clear that to prevail we humans will have to act with a smartness and selflessness that has so far eluded us during our long and tangled history.

There is the possibility that humankind can outgrow its infantile tendencies, as I suggested in Childhood's End. But it is amazing how childishly gullible humans are. There are, for example, so many different religions — each of them claiming to have the truth, each saying that their truths are clearly superior to the truths of others — how can someone possibly take any of them seriously? I mean, that's insane. ...Though I sometimes call myself a crypto-Buddhist, Buddhism is not a religion. Of those around at the moment, Islam is the only one that has any appeal to me. But, of course, Islam has been tainted by other influences. The Muslims are behaving like Christians, I'm afraid.

Yet now, as he roared across the night sky toward an unknown destiny, he found himself facing that bleak and ultimate question which so few men can answer to their satisfaction. What have I done with my life, he asked himself, that the world will be poorer if I leave it.

As I approach my 90th birthday, my friends are asking how it feels like, to have completed 90 orbits around the Sun. Well, I actually don't feel a day older than 89!

The fact that we have not yet found the slightest evidence for life — much less intelligence — beyond this Earth does not surprise or disappoint me in the least. Our technology must still be laughably primitive, we may be like jungle savages listening for the throbbing of tom-toms while the ether around them carries more words per second than they could utter in a lifetime.

CNN is one of the participants in the war. I have a fantasy where Ted Turner is elected president but refuses because he doesn't want to give up power.