In a paper originally given in Switzerland after a visit to the United States in 1952, Ellenberger reports that American psychiatrists are much less interested in nosology than European psychiatrists and are more concerned with dynamic exploration of the patient's problems. The Europeans think in terms of disease, constitution, and genetics; the Americans in terms of reactions to stress and individual dynamisms. America, of all the countries in the world, is the first to have shown preference for a dynamic psychiatry; psychiatric work is a group project more than in other countries, and the primary interest is being a good psychotherapist.