"I confess that, in 1901, I said to my brother Orville that men would not fly for 50 years. Two years later, we were making flights. This demonstration of my inability as a prophet gave me such a shock…"

"The machine has been proven to be a success beyond our most sanguine hopes."

"I think it will be a long time yet before anyone will be flying at any great height or speed."

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

"The greatest danger in flying is the ground."