A Quote by Carl Sagan

Except for fools and madmen, everyone knows that nuclear war would he an unprecedented human catastrophe. — © Carl Sagan
Except for fools and madmen, everyone knows that nuclear war would he an unprecedented human catastrophe.
The use of a mere dozen nuclear weapons ... would be a human catastrophe without parallel. ... Because so few weapons can kill so many people, even far-reaching disarmament proposals would leave us implicated in plans for unprecedented slaughter of innocent people. The sole measure that can free us from this burden is abolition.
If there was a war, a big war, a major war on the planet, it would be a nuclear war, and it would destroy all life, human and subhuman, on planet earth.
The catastrophe now threatening us is unprecedented - and we often confuse the unprecedented with the improbable.
We could not wipe ourselves out with a nuclear war. I do not want so sound too positive. It would be a catastrophe, but it would not be a final one. We are not powerful enough for that. An asteroid could be that powerful. That is why we need to do our homework.
In many places around the world, all over the U.S. and Europe there are active nuclear power plants. And for many years during the Cold War the threat of nuclear war was a permanent fear. There's always the concern that human kind is biting off more than they can chew in harnessing nuclear power.
The bottom line on nuclear weapons is that when the president gives the order, it must be followed. There's about four minutes between the order being given and the people responsible for launching nuclear weapons to do so. And that's why 10 people who have had that awesome responsibility have come out and, in an unprecedented way, said they would not trust Donald Trump with the nuclear codes or to have his finger on the nuclear button.
We must eliminate all nuclear weapons in order to eliminate the grave risk they pose to our world. This will require persistent efforts by all countries and peoples. A nuclear war would affect everyone, and all have a stake in preventing this nightmare.
Nobody's interests are served by what's happening in Syria today. It's a catastrophe. It's the worst human catastrophe since World War II. And, as I said just now, it represents a failure of the entire international community to come to grips with solving it.
There has been a transition from a nuclear-annihilation scenario to an isolated-terrorist-nuclear-bomb scenario. But we're still locked into a mind-set that nuclear war would be so overwhelming that any kind of preparedness would be futile.
There are two problems for our species' survival - nuclear war and environmental catastrophe - and we're hurtling towards them. Knowingly.
Many foolish people believe that nuclear war cannot happen, because there can be no winner. However, the American war planners, who elevated U.S. nuclear weapons from a retaliatory role to a pre-emptive first strike function, obviously do not agree that nuclear war cannot be won.
No war can end war except a total war which leaves no human creature on earth. Each war creates the causes of war: hate, desire for revenge and have-nots, desperate with need.
Every thinking person fears nuclear war, and every technological state plans for it. Everyone knows it is madness, and every nation has an excuse
The vast majority of human beings dislike and even actually dread all notions with which they are not familiar... Hence it comes about that at their first appearance innovators have generally been persecuted, and always derided as fools and madmen.
Today, the danger of some sort of a nuclear catastrophe is greater than it was during the Cold War, and most people are blissfully unaware of this danger.
If you asked me to name the three scariest threats facing the human race, I would give the same answer that most people would: nuclear war, global warming and Windows.
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