Quazen

Mary Roff had died in July 1865 at the age of 18, having suffered from fits throughout her life. It now seemed to Roff that his daughter had returned from the grave and taken over Lurancy’s body. Indeed, Lurancy was giving every sign of being Mary Roff and was constantly pleading to be allowed to go home to her parents.

Thomas Alva Edison (1847-1931) was not a scientist. In fact he was a self-taught man. He had no theoretical or mathematical background. Today his name is among the greatest inventors of all time. During his lifetime he invented about 1000 new things. Most of this success came from perfecting the ideas of other people or improvising on the inventions of others.