When Fritz was satisfied of his safety, he would go up to his own room, throw aside the tight, heavy military coat which he hated, and put on a flowing French dressing-gown, scarlet colored, and embroidered with gold. Then, dressed to suit himself, he would take his music lesson, and enjoy every minute of the stolen pleasure. One day, however, in the middle of his playing, the friend at the door rushed into the room announcing that the King was coming. This boy and the teacher seized the flutes and music books and ran into a wood-closet, where they stood shaking with fear. Fritz threw off his dressing-gown, pulled on his military coat and sat down at a table, opening a book. Now the old King, his brows bent with anger, burst into the room. The sight of his delicate son reading seemed like fuel to his rage. He never minced his words, and proceeded to heap abuse on the head of the poor Prince, when all of a sudden he caught sight of the end of the scarlet gown sticking out from behind a screen. "What is that?" he cried, and stepping across the room pulled the gown out. Beside himself with rage he crammed it into the fireplace, and threw after it many of the ornaments the boy had used to decorate his room. Then he walked to the bookshelves and swept all the volumes to the floor, saying that he would have a bookseller buy the library next day, because his son was to be a soldier and not a scholar. For an hour he stayed there, pacing up and down the room, lecturing Fritz until the boy was almost sick with shame. Finally he left, and the two in the wood-closet were able to come out, both of them almost as badly frightened as the Prince himself. But if the King treated his son so badly, he treated his daughter Wilhelmina none the less so. He could hardly stand the sight of her at times, and her mother had to arrange a series of screens in her room so that when Frederick William came to see her the daughter could escape behind them. After such scenes Fritz and Wilhelmina would try to comfort each other, but the boy was gradually growing more sullen and rebellious. Again and again the boy thought of escape; he would have been only too glad to give up his position as Prince in exchange for the chance to live simply in some foreign land, free to follow his own tastes as other boys did theirs. He would have made the attempt, but he knew only too well that should he escape his father's hand would fall in terrible wrath on his dear sister Wilhelmina. He decided to stay and bear the burdens of this life the King had planned for him rather than desert his mother and sister. He was not a coward even if he was not made of iron.