"Kirkpatrick...says...that once one begins to work with him, or sees him dealing with great affairs, one has such a sense of evil arrogance that one is almost nauseated. He confesses that he has been rendered physically sick by some of the interviews that he has witnessed. Evil and treachery and malice dart into Hitler's mystic eyes. ... We asked Kirkpatrick what gave him his sense of actual evil. He said that after Hitler had flown from Godesberg to Munich to murder Roehm, he returned in the very highest spirits, mimicking to his secretary the gestures of fear which Roehm had made."
January 1, 1970
https://en.wikiquote.org/wiki/Adolf_Hitler