The Earth is the only world known so far to harbor life. There is nowhere else, at least in the near future, to which our species could migrate. Visit, yes. Settle, not yet. Like it or not, for the moment the Earth is where we make our stand.
Carl Sagan
Those worlds in space are as countless as all the grains of sand on all the beaches of the earth. Each of those worlds is as real as ours and every one of them is a succession of incidents, events, occurrences which influence its future. Countless worlds, numberless moments, an immensity of space and time. And our small planet at this moment, here we face a critical branch point in history, what we do with our world, right now, will propagate down through the centuries and powerfully affect the destiny of our descendants, it is well within our power to destroy our civilization and perhaps our species as well. If we capitulate to superstition or greed or stupidity we could plunge our world into a time of darkness deeper than the time between the collapse of classical civilization and the Italian Renaissance. But we are also capable of using our compassion and our intelligence, our technology and our wealth to make an abundant and meaningful life for every inhabitant of this planet.
Carl Sagan
Once the threshold is crossed when there is a self-sustaining level of life in space, then life's long-range future will be secure irrespective of any of the risks on Earth (with the single exception of the catastrophic destruction of space itself). Will this happen before our technical civilisation disintegrates, leaving this as a might-have-been? Will the self-sustaining space communities be established before a catastrophe sets back the prospect of any such enterprise, perhaps foreclosing it for ever? We live at what could be a defining moment for the cosmos, not just for our Earth.
Martin Rees
No, I have already said it elsewhere. This earth has had all the exoticism washed out of it. If in a hundred years we have not established contact with some other planet (but we will), or, next best, with the earth's interior, humanity is finished. There is no longer a means of living, we explode, we go to war, we perpetrate evil of all sorts; we are, in a word, incapable of remaining any longer on this rind. We are in mortal pain; both from the dimensions as they now stand, and from the lack of any future dimension to which we can turn, now that our tour of the earth has been done to death. (These opinions, I know, are quite sufficient to have me looked down upon as a mind of the fourth order.)
Henri Michaux
The greatest problem all around the world today, whether in America, Japan, China, Russia, India or anywhere else in the world, is that people are not in peace. People want peace. Today, if two people fight, the government is supposed to settle them down. But when governments fight, who is going to settle them down? The only one who can settle the governments down is the Perfect Master, the incarnation of God Himself, who comes to Earth to save mankind.
Maharaji (Prem Rawat)
Each moment in history is a fleeting time, precious and unique. But some stand out as moments of beginning, in which courses are set that shape decades or centuries.
This can be such a moment.
Forces now are converging that make possible, for the first time, the hope that many of man's deepest aspirations can at last be realized. The spiraling pace of change allows us to contemplate, within our own lifetime, advances that once would have taken centuries.
In throwing wide the horizons of space, we have discovered new horizons on earth.
For the first time, because the people of the world want peace, and the leaders of the world are afraid of war, the times are on the side of peace.Richard Nixon
Sagan, Carl
Sagan, Francoise
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