Translation of aufscheuchen

He also told me that he had build his scooter by himself. I could not understand how a doctor was able to build such a machine on his own. It seems that the circumstances made people capable of many things.
It comes not only from the need to feel superior (which would be a legitimate and natural desire), it is also the consequence of ignorance, believe in stereotypes and old-fashioned intolerance.
Sorry for bothering you with so many questions. You are going to be my first online language course. The more I trust you and your website, the more I will use it and recommend it...No problem...