His heart turned to his next dearest friend--his mother. He decided to try to make it the happiest Christmas of her life and bought her every kind of a present that he thought would make her happy and comfortable and sent her a check for $5,000.00 to do with just as she pleased and buy anything she wanted. Begged her to come to New York to see him soon after the new year, as he wanted her to see the sights of the city, and thought the trip would be good for her health. In the early part of 1928 Robert calculated that war was inevitable between England and Russia. He figured that the war would start not later than the summer and that many nations would be involved and that later an attack on the United States would come. His first airplane was now completed,--a small one according to the plan laid down by Ezekiel in the Bible. The plane had four wings and could fly on either one of its four sides. It had a new motor with 12 cylinders and could be operated either with gas, electricity or compressed air. He had constructed a wheel within a wheel so that he could lower his plane and land anywhere he chose and could rise straight up. One motor had a propeller in the center of the plane to lift it up while the other motor started its direct motion. He could drive his plane backwards or forwards. It was a great success and the boy wizard of Wall Street was now hailed as a new Lindbergh of the air. There was an extra motor built with a collapsible propeller so that he could shift it from the center of the airplane to the tail, enabling it to go backward or forward as he willed. The wings were so arranged that they could either remain stationary or be set in motion up or down by motor. This was a new and valuable feature in the construction of airplanes. Robert's next invention was to build a silent motor, or a muffler, which would prevent any sound. He knew that this would be very useful in war. After he had completed this invention, tested it and proved it a success, he offered it to the United States Government, but after the army officers, who knew very little about this new invention had looked it over, they refused it. Robert then sailed away in his new plane which he had named "The St. Marie." He visited England, France, Germany and in the Spring of 1928 made the longest successful flight to Japan, where he was received with great honor. Japan was very much interested in his new plane and in his muffler. The Japanese Government quickly closed a deal and bought his invention for a large sum of money. Robert felt that probably one day this invention would be used against his own country in time of war, but knew that the United States would have to learn a lesson--that too often in the past American inventions had been sold to foreign countries because his own Government would not buy them.