There are no absolute certainties in this universe. A man must try to whip order into a yelping pack of probabilities, and uniform success is impossible.
The universe is eight billion years old, the last two billion of which have produced intelligent life. During this time not one hour of absolute equity has prevailed.
How to know, oh how to know! All is relative ease and facility in orthodoxy, yet how can it be denied that good is in itself undeniable? Absolutes are the most uncertain of all formulations, while the uncertainties are the most real.
You used the word "civilization", which means a set of abstractions, symbols, conventions. Experience tends to be vicarious; emotions are predigested and electrical; ideas become more real than things.