My Autobiography by Charlie Chaplin:
I first met Einstein in 1926, when he came to California to lecture. I have a theory that scientists and philosophers are sublimated romanticists who channel their passions in another direction. This theory fitted well the personality of Einstein. He looked the typical Alpine German in the nicest sense, jovial and friendly. And although his manner was calm and gentle, I felt it concealed a highly emotional temperament, and that from this source came his extraordinary intellectual energy.
Carl Laemmle of the Universal studios phoned to say that Professor Einstein would like to meet me. I was thrilled. So we met at the Universal studios for lunch, the Professor, his wife, his secretary, Helene Dukas, and his Assistant Professor, Walter Meyer. Mrs Einstein spoke English very well, in fact better than the Professor. She was a square-framed woman with abundant vitality; she frankly enjoyed being the wife of the great man and made no attempt to hide the fact; her enthusiasm was endearing.
After lunch, while Mr Laemmle showed them around the studio, Mrs Einstein drew me aside and whispered: ‘Why don’t you invite the Professor to your house? I know he would be delighted to have a nice quiet chat with just ourselves.’ As Mrs Einstein had requested it would be a small affair, I invited only two other friends. At dinner she told me the story of the morning he conceived the theory of relativity.