Supersonic airplanes have ...

Supersonic airplanes have carried men at more than 2,000 miles per hour and there are reasons to believe that this speed will be doubled by 1960 or so.
Supersonic airplanes have carried men at more than 2,000 miles per hour and there are reasons to believe that this speed will be doubled by 1960 or so.
 Igor Sikorsky

More phrases

It really is all about believing in yourself: 80 per cent mental, 20 per cent physical.
 Victoria Pendleton
I believe however that peace is attainable regardless of the Arabs mentality, society or government.
 Yitzhak Rabin
You have inside you the capacity to invest your mental, emotional, and spiritual gifts in a way that glorifies God, impacts the world, and satisfies your own soul. I believe that-and I want you to believe it, too.
 David Jeremiah
The 'Goonies' are a close knit group. They believe in themselves, even though there are doubters throwing darts at them outside...'Goonies never say die.' That's pretty in line with the mentality of our team.
 Robin Lopez
I believe that there's no improvement if you have an inferiority complex and victim mentality.
 Kim Nam-joon

Quotes from the same author

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