"The desire for flight is the expression of a deep-seated human instinct."

"We have had considerable difficulty in getting the engine to work properly."

"Learning the secret of flight from a bird was a good deal like learning the secret of magic from a magician—something the magician won't tell, and the bird can't tell."

"We were confident that we had solved the problem of human flight."

"The greatest pleasure in life is to do what people say you cannot do."