Isn't it astonishing that all these secrets have been preserved for so many years just so we could discover them!

Isn't it astonishing that all these secrets have been preserved for so many years just so we could discover them!

No flying machine will ever fly from New York to Paris.

The airplane stays up because it doesn't have the time to fall.

"If birds can glide for long periods of time, then… why can’t I ?”

No flying machine will ever fly from New York to Paris ... [because] no known motor can run at the requisite speed for four days without stopping.