The Archbishop of Pisa secretly sought to entrap Galileo and deliver him to the Inquisition at Rome.

The Archbishop of Florence solemnly condemned the new doctrines as unscriptural; and Paul V, while petting Galileo, and inviting him as the greatest astronomer of the world to visit Rome, was secretly moving the Archbishop of Pisa to pick up evidence against the astronomer.
But by far the most terrible champion who now appeared was Cardinal Bellarmin, one of the greatest theologians the world has known.

He was earnest, sincere, and learned, but insisted on making science conform to Scripture.

The weapons which men of Bellarmin's stamp used were purely theological.

They held up before the world the dreadful consequences which must result to Christian theology were the heavenly bodies proved to revolve about the sun and not about the earth.