"We thought that we had solved a problem, but we had only created a new one."

"We have been out almost every day experimenting, and have made about 100 flights."

"It was impossible to convince the people generally that we were not a pair of lunatics."

"The difficulties of the problem are so great that few have dared to attack it."

"We have not been able to do much with the machine on account of the bad weather."