#2 "Ottomobile"

"At the end I would like to ask you not to take the things I achieved as more as they are. The photographs that show me flying high in the air give the impression that the problem is solved. But that is certainly not the case. I have to admit that it still requires a lot of work to develop a durable flight of a human being out of this simple gliding. The achievements so far are for humans flying no more than what the first insecure steps of an infant are for the walking of man." Otto Lilienthal (1)

(1)