He himself undertook his daughter's education, and to develop these two cardinal virtues in her gave her lessons in algebra and geometry till she was twenty, and arranged her life so that her whole time was occupied.

He was himself always occupied: writing his memoirs, solving problems in higher mathematics, turning snuffboxes on a lathe, working in the garden, or superintending the building that was always going on at his estate.

As regularity is a prime condition facilitating activity, regularity in his household was carried to the highest point of exactitude.

He always came to table under precisely the same conditions, and not only at the same hour but at the same minute.

With those about him, from his daughter to his serfs, the prince was sharp and invariably exacting, so that without being a hardhearted man he inspired such fear and respect as few hardhearted men would have aroused.