Let's not get too euphoric about the ancients! Whilst there were some clever people around most lived in a world of appeasing gods, avoiding curses, magic happenings, patriotism for their city and ruthless revenge. It was only some of the philosophers who recognized that a spirit world was just superstition.
Life was precarious; if you held an office of power there was a good chance of being murdered. If poor; your unsanitary life meant you lived with parasites and disease and there were few means of avoiding the plagues which visited the ancient world. The form of democracy invented by the Greeks was only for the elite, and slavery was the means of getting things done.
One enormous contribution of the ancient Greeks to the modern world was due to their inquisitiveness. By this they seeded that vital spark of real progress in civilization; to analyse things critically. That meant to view something objectively, to question what a thing is and why it is and not fall back on superstition or priests or what tradition had taught.
Have we all caught up with them in this?