Narration: And he returned to the isolation of his books and manuscripts, grim and more determined than ever.

Narration: Common sense suggested it might not be a bad idea, before proceeding with further tests, to throw up battlements around the house, with embrasures for artillery.

Narration: But this was plainly no way to begin the construction of brotherly love, so he decided instead to make his models smaller, on a scale of 100,000 to 1—that is, to conduct his experiments with microminiaturized civilizations.

Narration: In order not to forget what he’d learned, he hung signs like the following on his workshop walls: