I am afraid I am not in the flight for “aerial navigation”. I was greatly interested in your work with kites; but I have not the smallest molecule of faith in aerial navigation other than ballooning or of expectation of good results from any of the trials we hear of. So you will understand that I would not care to be a member of the aëronautical Society.
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As a response to Major B. F. S. Baden Powell's request to join the Aeronautical Society, December 8, 1896.
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Often reproduced out of context and without citation to any primary source as "Heavier-than-air flying machines are impossible", like in The Experts Speak : The Definitive Compendium of Authoritative Misinformation (1984) by Christopher Cerf and Victor Navasky, p. 236Lord Kelvin
The ideal solution of the problem of transportation will be arrived at only when the complete annihilation of distance in the transmission of power in large amounts shall have become a commercial reality. That day we shall invade the domain of the bird. When the vexing problem of aerial navigation, which has defied his attempts for ages, is solved, man will advance with giant strides.
Nikola Tesla
What are wanted for the Indian as for the Englishman, the Frenchman, the German, and the Russian, are not Constitutions and Revolutions, nor all sorts of Conferences and Congresses, nor the many ingenious devices for submarine navigation and aerial navigation, nor powerful explosives, nor all sorts of conveniences to add to the enjoyment of the rich, ruling classes; nor new schools and universities with innumerable faculties of science, nor an augmentation of papers and books, nor gramophones and cinematographs, nor those childish and for the most part corrupt stupidities termed art — but one thing only is needful: the knowledge of the simple and clear truth which finds place in every soul that is not stupefied by religious and scientific superstitions — the truth that for our life one law is valid — the law of love, which brings the highest happiness to every individual as well as to all mankind. Free your minds from those overgrown, mountainous imbecilities which hinder your recognition of it, and at once the truth will emerge from amid the pseudo-religious nonsense that has been smothering it: the indubitable, eternal truth inherent in man, which is one and the same in all the great religions of the world. It will in due time emerge and make its way to general recognition, and the nonsense that has obscured it will disappear of itself, and with it will go the evil from which humanity now suffers.
Leo Tolstoy
No feats of heroism are needed to achieve the greatest and most important changes in the existence of humanity; neither the armament of millions of soldiers, nor the construction of new roads and machines, nor the arrangement of exhibitions, nor the organization of workmen's unions, nor revolutions, nor barricades, nor explosions, nor the perfection of aerial navigation; but a change in public opinion.
And to accomplish this change no exertions of the mind are needed, nor the refutation of anything in existence, nor the invention of any extraordinary novelty; it is only needful that we should not succumb to the erroneous, already defunct, public opinion of the past, which governments have induced artificially; it is only needful that each individual should say what he really feels or thinks, or at least that he should not say what he does not think.Leo Tolstoy
Of all the mind tools we acquire in the course of furnishing our brains from the stockpiles of culture, none are more important, of course, than words - first spoken, then written. Words make us more intelligent by making cognition easier, in the same way (many times multiplied) that beacons and landmarks make navigation in the world easier for simple creatures. Navigation in the abstract multidimensional world of ideas is simply impossible without a huge stock of movable, memorable landmarks that can be shared, criticized, recorded, and looked at from different perspectives.
Daniel C. Dennett
Kelvin, Lord
Kemble, Edwin C.
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