Apparently we cycle through periods of high intelligence and humanity and mob think and depravity.
The Tao Te Ching was written 2500 years ago and yet you’d be hard-pressed to find a wiser, more serene and far-reaching philosophical work today.
There was the Greek and Roman Renaissance periods, but also ancient cultures that were highly advanced.
Between times were barbarians, raids, wars and other despicable human doings.
Mankind is never the same through time, but never something other than mankind, always with a capacity for both creation and destruction, cycling through the seasons of man, just like every other living creature.