I worked harder and harder now. I slept for ony short time each night, and I did not eat much food. wrote to my family less often. But they loved me and did not stop writing to me. They said they understood how busy I was. They did not want me to stop work to write or to see them. They would wait until I had more time. They hoped to see me very soon. The professors realized that I was doing very important work, and so they gave me my own laboratory. There was a small flat above the laboratory, where I lived, and sometimes I stayed inside the building for a week and did not go out. Above the laboratory I built a very tall mast. It was 150 metres high, and higher than the tallest building in the city. The mast could catch lightning and could send the electricity down to my machine in the laboratory. I had never forgotten the lightning that had destroyed the tree. There had been so much power in the electricity of that lightning. I believed I could use that electricity to give life to things that were dead. I will say no more than that. The secret of my machine must die with me. I was a very clever scientist, but I did not realize then what a terrible mistake I was making.