Of all the men who attacked the flying problem in the 19th century, Otto Lilienthal was easily the most important. ... It is true that attempts at gl….

One can get a proper insight into the practice of flying only by actual flying experiments. . . . The manner in which we have to meet the irregularit….

No one can realize how substantial the air is, until he feels its supporting power beneath him. It inspires confidence at once..

Small sacrifices must be made..

But we must admit the possibility that continued investigation and experience will bring us ever nearer to that solemn moment, when the first man wil….

Artificial flight may be defined as that form of aviation in which a man flies at will in any direction by means of an apparatus attached to his body….

Particular honour belongs to those who believed in the possibility of mechanical flight when all the world was against them; not the visionaries beca….

We returned home, after these experiments, with the conviction that sailing flight was not the exclusive prerogative of birds..

All flight is based upon producing air pressure, all flight energy consists in overcoming air pressure..