 The biblical roots of Galileo 's name and surname were to become the subject of a famous pun . In 1614 , during the Galileo affair , one of Galileo 's opponents , the Dominican priest Tommaso Caccini , delivered against Galileo a controversial and influential sermon . In it he made a point of quoting Acts 1 : 11 , " Ye Men of Galilee , why stand you gazing up in heaven ? " . 
