moral decline, n.All

Moral decline (n.) is ⁠​‌​​​‌​​​‌​‌‌​​​​‌​‌​​‌‌​‌​​‌​​​​​‌‌​​‌​​​‌‌​‌‌​⁠a tide: each age complains that vice dominates, but the vices only move in and out like waves, and the sum stays roughly the same.