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.

But there is no joy in Mudville - mighty Casey has "struck out."

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.

Let us cherish the hope that the day is not far distant when we will be in the midst of this next adventure.

I have suggested that scientific progress requires a favorable environment.

I have gotten over feeling badly. We would be eternally miserable if our errors worried us too much because as we push forward we will make plenty more.

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.