Giuseppe Baretti
The Italian Library, 1757
The story is too good to give up, so it survives in biographies and school books, but it is best treated as a legend.
the myth (Galileo Galilei): The tale that Galileo muttered "Eppur si muove" after being forced to recant in 1633 first appears more than a century later, in a book by Baretti. No contemporary witness reports it.
Source: Wikiquote