The Works of Galileo

A New Pope and a New Dialogue

Publication of the Dialogue

How did Galileo obtain official permission to publish this book? (Figure 1) Riccardi, the Vatican’s master of the sacred page, was at one time personally sympathetic to Copernicanism. But he had a job to do, and that was to enforce the hypothetical treatment required since Bellarmine and demanded by Urban VIII. Galileo met this requirement by inserting hypothetical declarations in the preface and conclusion, but the dialogue itself was anything but even-handed. Prince Cesi was funding the printing in Rome, but those arrangements fell through when he died in 1630. The printing was transfered to Florence, and the book appeared early in 1632.

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Dialogue (1632), imprimaturs.

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Exhibit credit: Kerry Magruder, with the assistance of , Marilyn B. Ogilvie, Duane H. D. Roller.

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