I had the pleasure of welcoming you to the Château de Longchamp. Now I wish to close with a few words of thanks.
The material presented here has been extremely interesting to all of us who listened and wanted to learn. Without doubt, at times clarity was obscured by new clouds, and we had the feeling that we were still surrounded by much mystery. Nevertheless, as Dr. Enders said, there are bright rays of hope for future accomplishments.
It will be most useful for our center to continue to organize meetings such as this one in which people from differing disciplines and countries gather to discuss one specific problem. Indeed all scientific methods are identical and scientific truths are universal—but the way of looking at things differs slightly from country to country. It is important for physicians and research workers of the Old World to benefit from the experiences