The main source for the life of Bellarmine is his Latin Autobiography (Rome, 1675; Louvain, 1753), which was reprinted with original text and German translation in the work of Dollinger and Reusch entitled Die Selbstbiographie des Cardinals Bellarmin (Bonn, 1887).
Couderc's Le Venerable Cardinal Bellarmin (2 vols., Paris, 1893), and X.
Cardinal Robert Bellarmin was at that time by far the most influential member of the Sacred College.
Galileo received, as the result of a conference between Cardinals Bellarmin and Del Monte, a semi-official warning to avoid theology, and limit himself to physical reasoning.
Two days later Galileo was, by command of the pope (Paul V.), summoned to the palace of Cardinal Bellarmin, and there officially admonished not thenceforward to "hold, teach or defend" the condemned doctrine.
He brought with him, for the refutation of calumnious reports circulated by his enemies, a written certificate from Cardinal Bellarmin, to the effect that no abjuration had been required of or penance imposed upon him.
The accusation against him was that he had written in contravention of the decree of 1616, and in defiance of the command of the Holy Office communicated to him by Cardinal Bellarmin; and his defence consisted mainly in a disavowal of his opinions, and an appeal to his good intentions.