Survival in such an unhappy eventuality would depend largely on what prior precautions had been taken by individuals and families for their own safet… - Lewis Strauss

The President had unequivocally said that we would never use atomic weapons except against an aggressor. None of us like the idea of using them -- not least those of us who are engaged in their production -- but these reservations, which are the result of our moral principles, can be used, and are being used, by our enemies to trap and confound us. We must see the problem in its full perspective. We are not making weapons for conquest or aggression, or to impose our system on other peoples. Our sole purpose in having them is that we may not fall easy prey to others who have no such reservations, -- and who lack them because they lack the moral springs from which they might arise. Our reservations and principles do us proud but we cannot allow them to disarm us. For if ever they did, those principles would disappear from the face of the earth.

I am sure we are agreed that the ultimate survival of America is dependent on intellectual vigor and on spiritual deeprooting -- not on specific devices which are always for the moment. It has politics. The future of the scientists' America, and yours and mine, lies fundamentally with education -- that which is taught to the young in our schools -- that which is taught throughout life in the media of general communication by the contemporary writers. Fundamental are respect and zeal for scholarship, a lively regard for moral values, and a love of truth. And of these the last is, of course, the greatest. The atom has no ethics of its own any more than.

Our civil defense efforts, as I mentioned a moment ago, have been faced with many difficult problems. These problems will continue and no doubt increase. As other nations develop and produce nuclear weapons of still greater efficiency and more destructive capabilities, our current planning for civil defense continuously requires revision lest it become outmoded. If we assume that an enemy can deliver an appreciable fraction of the weapons which we believe he can produce, the delivered cost of any one of those weapons may be almost insignificant compared with its potential damage. Also, an enemy is probably in a position to increase his destructive power of attack faster than we can hope to provide new and better civil defense measures to combat that increase. Civil defense, however efficiently organized it may be, simply cannot expect to keep ahead of the enemy's growing stockpile of more destructive, more diversified and presumably more effective nuclear weapons.