Napoleon Bonaparte and Laplace knew each other,.
The most famous exchange between these two men occurred after Laplace had given Napoleon a copy of his great work, the Mecanique Celeste. Napoleon looked it over, and remarked that in this massive volume about the universe there was not a single mention of God, its creator. Laplace replied "Sire, I had no need of that hypothesis". ("Je n'ai pas besoin de cette hypothèse")Source. The source has an interesting discussion about "Napoleon's theorem" in plane geometry. (which is a very neat theorem!)
Napoleon's theorem states that if we construct equilateral triangles on the sides of any triangle (all outward or all inward), the centers of those equilateral triangles themselves form an equilateral triangle, as illustrated below.
