"The machine was not built for speed, but for stability."

"We could not understand why the calculation of Lilienthal and others were so much in error."

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

"We have been trying to solve the problem of aerial navigation, and we believe we have succeeded."

"The flying machine which will really fly might be evolved by the combined and continuous efforts of mathematicians and mechanicians in from one million to ten million years — provided, of course, we c…"