I had heard Niels Bohr speak at the Chicago World Fair. I believe that was 1932. I realized that I didn't understand what he said and probably nobody else did. But later, when I saw other occasions when audiences had the same trouble in understanding what Bohr said, I came to sympathize with the organizers of the meeting in Geneva. They had interpreters for Russian and French and German to translate what the speaker said, but they'd added an extra one, one who would interpret Bohr's English in English that the audience could get. And the French, especially had trouble with his way of speaking. They used the phrase 'La brume du Nord'- the fog from the North. It was not so much that Bohr didn't know what he was saying, he did, but he wanted to be very cautious in what he said, and that's where the trouble came. People wanted something simple, direct, definite and positive. That's the last thing he wanted to do.