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.