Wright Brothers (Orville & Wilbur) — "It is not necessary to be a genius to be an inventor."

"The greatest danger in flying is the ground."

"We were lucky enough to grow up in an environment where there was always much encouragement to children to pursue intellectual interests; to investigate whatever aroused curiosity."

"Success comes from being prepared for opportunities."

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

"If its engine stops, it must fall with deathly violence, for it can neither glide like the aeroplane or float like the balloon. The helicopter is much easier to design than the aeroplane, but is worth…"