“The person who merely watches the flight of a bird gathers the impression that the bird has nothing to think of but the flapping of its wings. As a matter of fact this is a very small part of its mental labor. To even mention all the things the bird must constantly keep in mind in order to fly securely through the air would take a considerable part of the evening.”
Speech to the Western Society of Engineers (18 September 1901); published in the Journal of the Western Society of Engineers (December 1901); republished with revisions by the author for the Annual Report of the Board of Regents of the Smithsonian Institution (1902) http://invention.psychology.msstate.edu/i/Wrights/library/Aeronautical.html
Context: The person who merely watches the flight of a bird gathers the impression that the bird has nothing to think of but the flapping of its wings. As a matter of fact this is a very small part of its mental labor. To even mention all the things the bird must constantly keep in mind in order to fly securely through the air would take a considerable part of the evening. If I take this piece of paper, and after placing it parallel with the ground, quickly let it fall, it will not settle steadily down as a staid, sensible piece of paper ought to do, but it insists on contravening every recognized rule of decorum, turning over and darting hither and thither in the most erratic manner, much after the style of an untrained horse. Yet this is the style of steed that men must learn to manage before flying can become an everyday sport. The bird has learned this art of equilibrium, and learned it so thoroughly that its skill is not apparent to our sight. We only learn to appreciate it when we try to imitate it.
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Wilbur Wright 12
American aviation pioneer 1867–1912Related quotes
Source: The Wheel of Time: Shamans of Ancient Mexico, Their Thoughts About Life, Death and the Universe], (1998), Quotations from "The Power of Silence" (Chapter 18)

“A weight is on the air, for ev'ry breeze
Has, bird-like, folded up its wings for sleep.”
The Ancestress (Spoken by Bertha)
The Venetian Bracelet (1829)

Bequest of Pavlov to the Academic Youth of His Country. Science, Vol. 83, Issue 2155, pg. 369 (1936)

Source: 1890s, The Principles of Psychology (1890), Ch. 9

"Communication with Alien Intelligence" http://web.media.mit.edu/~minsky/papers/AlienIntelligence.html, in Extraterrestrials: Science and Alien Intelligence (1985) edited by Edward Regis <!-- Cambridge University Press --> also published in Byte Magazine (April 1985)
Context: Speed is what distinguishes intelligence. No bird discovers how to fly: evolution used a trillion bird-years to 'discover' that – where merely hundreds of person-years sufficed.

“They cripple the bird's wing, and then condemn it for not flying as fast as they.”
Malcolm X on Zionism (1964)

“A bird is safe in its nest - but that is not what its wings are made for.”
World Peace: The Voice of a Mountain Bird (2014) https://books.google.co.uk/books?id=KkYtBgAAQBAJ,