Now I'll have to find the source! I think it might have been quoted in Speer's "Inside the Third Reich", but I have a darned bookcase on that era and grep doesn't work on paper... :-[
Discussion
grep command would be great on paper 😂
And I didn't doubted it at all. These quotes are really easy to find nowadays. No worries mate (l remember hearing often when I was Down under...). 😊