We've lost the Eden, but instead, we've been compensated with a wonderful Nature to surround us on this "Sinful Earth"... abundant of flowers and birds - the most spectacular, colourful, gracious creations of all inhabiting it. We have always envied birds their wings...
The desire to fly is an idea handed down to us by our ancestors who... looked enviously on the birds soaring freely through space... on the infinite highway of the air.
If not for birds, where from would the idea of flight come to human minds? We owe it to birds, as well as we owe them the lessons of music and dances - birds are probably the only really singing and dancing creatures on the planet. Watching birds dancing, people adopted their "body language" - dancing for expression of their emotions.