"This quotation is often cited as having come from Mein Kampf, the autobiography and political polemic written by Hitler during his stay in Landsberg prison, but no such passage appears in that work. In fact, this quotation appears to have been virtually non-existent until 2014, when it was used as the heading to Chapter 11 of Willfully Ignorant, a novel by Pat Miller set in Nazi-era Germany. (That book also mistakenly cited Mein Kampf as the source of the quotation.)"

https://www.snopes.com/fact-check/hitler-control-quote/