Did they believe in a flat Earth?..

… did religionists really believe in a flat Earth before the advent of the scientific age? Not since Aristotle presented evidence for a spherical Earth in 330 BC, observing that southbound travellers see southern stars rising higher above the horizon.

— Edgar Andrews, from Who Made God?, kindle location 1559

The Dark Ages is a hoax…

The idea that Europe fell into the Dark Ages is a hoax originated by antireligious, and bitterly anti-Catholic, eighteenth-century intellectuals who were determined to assert the cultural superiority of their own time…

Rodney Stark, from Victory of Reason, p. 35