When reading about the ancient world, there is a shock of how differently everything worked, how it was common to do an human sacrifice, how everyday things were explained by demons and gods and how the social hierarchy was stablished by mythologic narratives.
People credit the change to the modern world to the illuminist period, but if you actually look into, it changed with the birth of Christianity, long long before illuminism.
And looking back at the pre-christian world, you can recognize what our world is turning, or returning into.