As he continued his speech in front of hundreds of professors, lecturers and students of the Papal Gregorian University of Rome, Benedict XVI also spoke of inter-religious dialogue. "Then, one cannot do without the relation with the other religions he said that turns out to be fruitful provided one avoids any ambiguity that might somehow weaken the essential content of the Christian faith in the sole Christ, the Saviour of all men, and in the Church as the necessary sacrament of salvation for all humankind". As to the centuries-old commitment of the "Gregorian" University to the development of humane sciences, the Pope mentioned its "great prestige" in the area of mathematics, physics and astronomy, and recalled that the so-called "Gregorian" calendar, "established by my predecessor Gregory XIII, currently used all over the world, was developed in 1582 by father Cristoforo Clavio, professor at the Roman College (which then changed its name into Gregorian University, editor’s note)". He also mentioned father Matteo Ricci, "who took as far as China, along with his testimony of faith, the knowledge acquired as a student of father Clavio" (to be continued)
