"All that is meant by Decadence is 'falling off.' It implies in those who live in such a time no loss of energy or talent or moral sense. On the contrary, it is a very active time, full of deep concerns, but peculiarly restless, for it sees no clear lines of advance. The loss it faces is that of Possibility. The forms of art as of life seem exhausted, the stages of development have been run through. Institutions function painfully. Repetition and frustration are the intolerable result. Boredom and fatigue are great historical forces."
"Behold, I am making all things new." Revelation 21:5
See Jacques Barzun, From Dawn to Decadence: 500 Years of Western Cultural Life, 1500 to the Present, page xvi.