Thomas Edison, an American inventor, got fired twice. "The first time was when I was a telegraph operator," he said. "It was my fault, all right, but I got so interested in the machine and its workings that I began to see how I could improve it. But I forgot all about the messages that were coming over the wire, and I left a lot of messages unsent and undelivered. Of course, they discharged me, and I didn't blame them.
"Then I got a job in an office, and there were a fearful lot of rats; terribly old office, you know. I got up a thing that killed them like flies ─ the same with cockroaches. The floor used to be covered with dead roaches, and they fired me for that!"