31 OCTOBER 1992
His Eminence Cardinal Paul Poupard, President of the Pontifical Council for Culture, Addressed the Holy Father in the Name of the Pontifical Commission on the Galileo Case, Giving a Summary of the Conclusions Reached
Most Holy Father,
Nearly thirteen years have now passed since you received the Pontifical Academy of Sciences, in this same Sala Regia, for the first centenary of the birth of Albert Einstein, and again directed the attention of the world of culture and of science to another scholar, Galileo Galilei.
- You expressed the hope that interdisciplinary research would be undertaken to explore the difficult relations of Galileo with the Church. You also established, on 3 July 1981, a Pontifical Commission for the study of the Ptolemaic-Copernican controversy of the 16th and 17th centuries, to which the Galileo case belongs and you had entrusted to Cardinal Garrone responsibility for coordinating the research. You have asked me to give an account of their results.
That Commission was made up of four working groups, with the following chairmen: Cardinal Carlo M. Martini for the exegetical section; myself for the cultural section; Prof. Carlos Chagas and Fr. George V. Coyne for the scientific and epistemological section; Msgr. Michele Maccarrone for historical and juridical questions; Fr. Enrico di Rovasenda served as secretary.
Calm and objective reflection undertaken
The aim of these groups was to reply to the expectations of the world of science and culture regarding the Galileo question, to rethink this whole question, with complete fidelity to established historical facts and in conformity with the teachings and the culture of the times, and to recognise honestly, in the spirit of the Second Vatican Council, the right and the wrongs, regardless of their source. It was not a question of conducting a
retrial but of undertaking a calm and objective reflection, taking into account the historical and cultural context. The investigation was broad, exhaustive and carried out in all the areas involved. And the series of studies, theses and publications of the Commission have also stimulated numerous studies in various spheres.
- The Commission addressed three questions: What happened? How did it happen? Why did it happen? The answers to these three questions, answers based upon a critical investigation of the texts, throw light on a number of important points.
The critical edition of the documents, and in particular of items from the Vatican Secret Archives, enables one to consult easily and with all the desirable guarantees the complete record of the two trials and especially the detailed account of the interrogations to which Galileo was subjected. 3 The publication of Cardinal Bellarmine’s declaration to Galileo, together with that of other documents, clarifies the intellectual horizon of that key person of the whole affair. The editing and publication of a series of studies have cast light on the cultural, philosophical and theological context of the 17th century. They have also led to a clearer understanding of the positions taken by Galileo with respect to the decrees of the Council of Trent 6 and to the exegetical orientations of his time, and this has made possible a careful appraisal of the immense literature dedicated to Galileo, from the Enlightenment down to our own day.
Cardinal Bellarmine asked the two real questions
Cardinal Robert Bellarmine, in a letter of 12 April 1615 to the Carmelite Foscarini, had already stated the two real questions raised by Copernicus’ system: is Copernican astronomy true, in the sense that it is supported by real and verifiable proofs, or does it rest only on conjectures or probabilities? Are the Copernican theses compatible with the statements of Sacred Scripture? According to Robert Bellarmine, as long as there was no proof that the earth orbited round the sun, it was necessary to interpret with great circumspection the biblical passages declaring the earth to be immobile. If the orbiting of the earth were ever demonstrated to be certain, then theologians, according to him, would have to review their interpretations of the biblical passages apparently opposed to the new Copernican theories, so as to avoid asserting the error of opinions which had been proved to be true: ‘I say that if it were really demonstrated that the sun is at the centre of the world and the earth is in the third heaven, and that it is not the sun which revolves round the earth, but the earth round the sun, then it would be necessary to proceed with great circumspection in the explanation of Scriptural texts which seem contrary to this assertion and to say that we do not understand them, rather than to say that what is demonstrated is false’.