This machine was a failure to the extent that it could not fly. In other respects it was a very important and necessary stepping stone.

Aeronautics was neither an industry nor a science. It was a miracle.

The helicopter is probably the most versatile instrument ever invented by man. It approaches closer than any other to fulfillment of mankind's ancient dreams of the flying horse and the magic carpet.

It would be right to say that the helicopter's role in saving lives represents one of the most glorious pages in the history of human flight.

If you are in trouble anywhere in the world, an airplane can fly over and drop flowers, but a helicopter can land and save your life.

The work of the individual still remains the spark that moves mankind forward.

It would be right to state that, with the successful flight of the XR-4 in the summer of 1942, the helicopter became a reality in the United States.