We have just had an election in the United Kingdom. I could not help being envious of the politicians for their ability to address meetings day after day and even several times a day; gradually it dawned on me how easy it was to speak if you never had to think and if your speeches were made up of a string of well-worn clichés. Soldiers too, and in particular one well-known general of the last war, now a Field Marshal, speak in clichés. It would be simple to talk about griseofulvin on military lines—the cold war, the development of the secret weapon, the attack and breakthrough, the follow-up, consolidation of gains, and assessment of the new situation. We have indeed achieved a break-through, and at this symposium we are trying to assess the present situation. Are there any enemy pockets left behind our lines? How much resistance remains or may