"For some years I have been afflicted with the belief that flight is possible to man. My disease has progressed to an incurable stage."

"We have at last succeeded in making a machine that will fly."

"The greatest value of our experiments has been their negative results."

"The course of the experiment was not exactly according to calculations, but was a success nevertheless."

"The only birds that speak are parrots, and they don’t fly very high."