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Galileo remained at the Rome College for two weeks and delivered four lectures. During this time, he and Stefano met more than once in the huge library of the university. In the tradition of all public libraries, books here were chained to the shelves to prevent theft, long enough to comfortably read at the table. The scientist often used some tome, explaining the details of his theory.

“I am sure, my friend,” he said, poking his finger at the parchment pages, “that the universe has no edge, and it is all evenly filled with stars. There are a lot of them, and the distance to them is huge. It is a pity that not everyone shares my opinion.

“What do you care about everyone, professor?”

- Of course, I don't care what the ignorant think, but I appreciate the opinion of every thinking person. I have a colleague, the German Johannes Kepler, who is very clever, I tell you. So, he, like me, believes that the Sun is at the center of the world, that the planets, due to their natural properties,