The Church says the Earth is flat, but I know that it is round. For I have seen the shadow on the Moon, and I have more faith in a shadow than in the Church.
Ferdinand Magellan (1480-1521) Portuguese explorer
(Attributed)
Probably spurious. No mention can be found prior to Ingersoll tentatively attributing it to Magellan in 1873.
This is currently thought to be a false attribution see this article:
http://en.wikiquote.org/wiki/Ferdinand_Magellan
Thanks. I’ve added a comment to that effect.