I can’t vouch for the authenticity of the quote, but it does sound like Hitler. Hitler and the other Nazi higher ups did indeed view things in that cynical manner. This isn’t incompatible with them viewing their victory as an ideological one. Their ideology was founded on the idea of some people being better than others and on the idea of a great leader who would lead the nation towards glory and a better future. The reason the Nazis came to power (and not some other right-wing group or cabal) was this amoral and cynical ruthlessness at the heart of their ideology.
Hitler may not have ever said this, but the idea that he wouldn’t have viewed it that way or that if he had he would never have said it out loud (or committed it to paper) is misguided.
I think he meant that the more moderate elements of Nazism were always in danger of being co-opted by the democratic state that preceded it. Doing so would have taken the wind out of the movement’s sails. But by opposing all aspects of Nazism the moderates created a movement that was unified through shared opposition. And so the most radical elements of Nazism were able to take control of the country.
It makes clear that the “principle” Hitler is talking (screaming?) about here is NOT the principle of the Nazi ideology - but the “principle” of the specific development (“Entwicklung”) by which the Nazi party rose to power, i.e. a slow, steady, gradual ascent, over “five or ten or twenty years,” during which he/they built up “a state of authority,” marked by “fanatical devotion and ruthless determination,” within the weak and corrupt “state of democracy”:
Then there’s this:
Not quite. Rather than unite the Nazi movement, the rather meek and “bourgeois” resistance and oppression they faced only helped to cleanse it, i.e. of its weakest members - separating the wheat from the chaff, as it were, or the men from the boys, in a way which Hitler considered must “fortunate”:
The “bourgeois” oppression did not manage to eradicate the battle-hardened core of the movement, however, which indeed only grew stronger in the process. And so, finally, it was only a question of time before he and the boys would take over the country:
A quick google search indicates that the entire speech can be found in Christan Dube’s Religiöse Sprache in Reden Adolf Hitlers: Analysiert an Hand ausgewählter Reden aus den Jahren 1933-1945, published in 2004, available for a meastly 25 euros from the German (what else?) Amazon.