Aviation Quote by Igor Sikorsky

In my opinion, we should search for a completely different flying machine, based on other flying principles.

— Henri Coanda

Heavier-than-air flying machines are impossible.

— Lord Kelvin

I have always felt it is my destiny to build a machine that would allow man to fly.

— Leonardo da Vinci

Is it not demonstrated that a true flying machine, self-raising, self-sustaining, self-propelling, is physically impossible?

— Joseph LeConte

With all the knowledge and skill acquired in thousands of flights in the last ten years, I would hardly think today of making my…

— Orville Wright

I believe the new machine of the Wrights to be the most promising attempt at flight that has yet been made.

— Octave Chanute

It is apparent to me that the possibilities of the aeroplane, which two or three years ago were thought to hold the solution to…

— Thomas A. Edison

One: There is a low limit of weight [of about] 50 pounds beyond which it is impossible for an animal to fly. Two: The…

— Joseph LeConte

Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible.

— Simon Newcomb

Every flying machine has its own unique characteristics, some good, some not so good. Pilots naturally fly the craft in such a manner as…

— Neil Armstrong

These airplanes we have today are no more than a perfection of a toy made of paper children use to play with. My opinion…

— Henri Coanda

If a machine is expected to be infallible, it cannot also be intelligent.

— Alan Turing