"It is not in the nature of man to be content with things as they are."

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

"Our experiments were made on a larger scale than those of any other investigator."

"The best thing about being a man of science is that you never have to be bored."

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