Hard times also bred the Nazis.

And to say those were the hard times conversely states that prior to that were the so-called 'good times.' This might be generalized as the roaring 20s in the US (and similarly for Weimar Germany.) However, this generalization fails in two regards: 1) contrary to popular belief, the roaring 20s weren't roaring for most people in the US (or Germany). 2nd) the members of both eras were primarily composed of the same individuals; there is no distinct line of generations divided by 'good times/bad times.'

Lastly it implies that by definition all 'good times' are predicated upon holocaust.

EDIT: And that strength can only be continually cultivated through perpetual war.