We have reached the age, those of us to whom fortune has assigned a post in life's struggle, when beaten and smashed and biffed by the lashing of the dragon's tail, we begin to appreciate that the old man was not such a fool after all. We saw our parents wrestling with the same dragon, and we thought, though we never spoke a thought aloud, 'Why doesn't he hit him on the head?' Alas, comrads, we know now. We have hit the dragon on the head and we have seen the dragon smile.

I have suggested that scientific progress requires a favorable environment.

The atomic bombs will surely shorten the war, and let us hope that they will effectively end war as a possibility in human affairs.

The day when the scientist, no matter how devoted, may make significant progress alone and without material help is past. This fact is most self-evident in our work. Instead of an attic with a few test tubes, bits of wire and odds and ends, the attack on the atomic nucleus has required the development and construction of great instruments on an engineering scale.

In the Radiation Laboratory we count it a privilege to do everything we can to assist our medical colleagues in the application of these new tools to the problems of human suffering.

No individual is alone responsible for a single stepping stone along the path of progress, and where the path is smooth progress is most rapid.

We have reached the age, those of us to whom fortune has assigned a post in life's struggle, when beaten and smashed and biffed by the lashing of the dragon's tail, we begin to appreciate that the old man was not such a fool after all. We saw our parents wrestling with the same dragon, and we thought, though we never spoke a thought aloud, 'Why doesn't he hit him on the head?' Alas, comrads, we know now. We have hit the dragon on the head and we have seen the dragon smile.