Ask him about his views on Phrenology, which was taught in Nazi Germany. There was only one man who stood up during the lecture and said: "This is wrong!" - stood up and gave a real lecture, the audience erupted in spontaneous cheers afterwards. That man's name? Einstein!
Here is the text of his speech.

(Einstein emigrated to not be killed by Nazis, the above part is fiction (except for the phrenology being taught).