In the middling science fiction novel Those Who Remain, author G. Michael Hopf said: “Hard times create strong men, strong men create good times, good times create weak men, and weak men create hard times.” This quote (which in modern terms obviously relates to all human beings) has become something of a catch-all sentiment for ‘decadence’.
The Great Depression in the 1930s is a good example of a time that this quote capture well: When economic turmoil challenged communities and individuals, making it necessary to adapt.