Some recent work by E. Fermi and L. Szilard, which has been communicated to me in manuscript, leads me to expect that the element uranium may be turned into a new and important source of energy in the immediate future. Certain aspects of the situation seem to call for watchfulness and, if necessary, quick action on the part of the Administration...
This new phenomenon would also lead to the construction of bombs, and it is conceivable—though much less certain—that extremely powerful bombs of a new type may thus be constructed. A single bomb of this type, carried by boat or exploded in a port, might very well destroy the whole port together with some of the surrounding territory. However, such bombs might very well prove to be too heavy for transportation by air.
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Letter to President Franklin D. Roosevelt (August 2, 1939, delivered October 11, 1939); reported in Einstein on Peace, ed. Otto Nathan and Heinz Norden (1960, reprinted 1981), pp. 294–95.Albert Einstein
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Some recent work by E. Fermi and L. Szilard, which has been communicated to me in manuscript, leads me to expect that the element uranium may be turned into a new and important source of energy in the immediate future. Certain aspects of the situation seem to call for watchfulness and, if necessary, quick action on the part of the Administration...
Enrico Fermi
Suppose Germany had developed two bombs before we had any bombs. And suppose Germany had dropped one bomb, say, on Rochester and the other on Buffalo, and then having run out of bombs she would have lost the war. Can anyone doubt that we would then have defined the dropping of atomic bombs on cities as a war crime, and that we would have sentenced the Germans who were guilty of this crime to death at Nuremberg and hanged them?
But, again, don't misunderstand me. The only conclusion we can draw is that governments acting in a crisis are guided by questions of expediency, and moral considerations are given very little weight, and that America is no different from any other nation in this respect.Leo Szilard
It may be inappropriate to put it in this way, but the atomic bombs and the Soviet entry into the war are, in a sense, God's gifts. Now we can end the war without making it clear that we have to end the war because of the domestic situation. I have long been advocating the conclusion [of the war], not because I am afraid of the enemy's attacks or because of the atomic bombs or the Soviet participation in the war; The most important reason is my concern over the domestic situation.
Mitsumasa Yonai
The free world, at least dimly aware of these facts, has naturally embarked on a large programme of warning and defence systems. That programme will be accelerated and extended. But let no one think that the expenditure of vast sums for weapons and systems of defence can guarantee absolute safety for the cities and citizens of any nation. The awful arithmetic of the atomic bomb does not permit of any such easy solution. Even against the most powerful defence, an aggressor in possession of the effective minimum number of atomic bombs for a surprise attack could probably place a sufficient number of his bombs on the chosen targets to cause hideous damage.
Dwight D. Eisenhower
Einstein, Albert
Eisenhower, Dwight D.
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