Epicureans were the spiritual secularists of their day. My favourite teachings are:
"Is God willing to prevent evil, but not able? Then he is not omnipotent. Is he able, but not willing? Then he is malevolent. Is he both able and willing? Then whence cometh evil? Is he neither able nor willing? Then why call him God?”
And...
"It is impossible to live a pleasant life without living wisely and honorably and justly, and it is impossible to live wisely and honorably and justly without living pleasantly. Whenever any one of these is lacking, when, for instance, the man is not able to live wisely, though he lives honorably and justly, it is impossible for him to live a pleasant life."
I like the first because it destroys the apologists and the second because it is a stark contrast to the hedonists that Paul made them out to be. Such a shame Christianity persecuted them so unabashedly. Nearly killed us off, but not quite. I count myself as an Epicurean.
What happened when Christianity finally got control? The Dark Ages. I rest my case.
Another character from the end of antiquity is Hypathia of Alexandria. Look what the Christians did to her, probably inspired by the writings of Paul. Poor woman. She's more of a hero than anything you'll find in the Bible.