THOMAS ALVA EDISON

From February 11, 1847 to October 18, 1931. He was an American inventor and businessman, who has been described as America’s greatest inventor. He developed many devices that greatly influenced life around the world, including the phonograph, the motion picture camera, and the long-lasting, practical electric light bulb.
Dubbed "The Wizard of Menlo Park", he was one of the first inventors to apply the principles of mass production and large-scale teamwork to the process of invention, and because of that, he is often credited with the creation of the first industrial research laboratory.

In his early stage, he One day came home and gave a paper to his mother. He told her, “My teacher gave this paper to me and told me to only give it to my mother.”

His mother’s eyes were tearful as she read the letter out loud to her child: Your son is a genius. This school is too small for him and doesn’t have enough good teachers for training him. Please teach him yourself.

After many, many years, after Edison’s mother died and he was now one of the greatest inventors of the century, one day he was looking through old family things. Suddenly he saw a folded paper in the corner of a drawer in a desk. He took it and opened it up. On the paper was written: Your son is addled [mentally ill]. We won’t let him come to school any more.

Edison cried for hours and then he wrote in his diary: “Thomas Alva Edison was an addled child that, by a hero mother, became the genius of the century.”!!
 May His Soul Rest In Perfect Peace.