"But as to the fable that there are Antipodes, that is to say, men on the opposite side of the earth, where the sun rises when it sets to us, men who walk with their feet opposite ours, that is on no ground credible. And, indeed, it is not affirmed that this has been learned by historical knowledge, but by scientific conjecture."
- Saint Augustine of Hippo
in 'The City of God'
http://www.wischik.com/lu/senses/city-of-god.html