“The power of human thought grows exponentially with the number of minds that share that thought.”

Nan Yar = Who am I?

Source: Autosuggestion : My method (2014), Chapter I. The reality of auto-suggestion.

Winston Churchill, in "The Defence of Freedom and Peace (The Lights are Going Out)", radio broadcast to the United States and to London (16 October 1938).
The 1930s
Context: People say we ought not to allow ourselves to be drawn into a theoretical antagonism between Nazidom and democracy; but the antagonism is here now. It is this very conflict of spiritual and moral ideas which gives the free countries a great part of their strength. You see these dictators on their pedestals, surrounded by the bayonets of their soldiers and the truncheons of their police. On all sides they are guarded by masses of armed men, cannons, aeroplanes, fortifications, and the like — they boast and vaunt themselves before the world, yet in their hearts there is unspoken fear. They are afraid of words and thoughts; words spoken abroad, thoughts stirring at home — all the more powerful because forbidden — terrify them. A little mouse of thought appears in the room, and even the mightiest potentates are thrown into panic. They make frantic efforts to bar our thoughts and words; they are afraid of the workings of the human mind. Cannons, airplanes, they can manufacture in large quantities; but how are they to quell the natural promptings of human nature, which after all these centuries of trial and progress has inherited a whole armoury of potent and indestructible knowledge?

Original text: J'ai tant de sentiments et d'idées qui me sont communes avec les Anglais, que l'Angleterre est devenue pour moi une seconde patrie intellectuelle.
Voyages en Angleterre et en Irlande (Journeys to England and Ireland), 1835.
1830s

Source: Forever . . .

Oppression and Liberty (1958), p. 82

Source: Address on Laying the Cornerstone of the Bunker Hill Monument (1825), p. 71
Context: Mind is the great lever of all things; human thought is the process by which human ends are ultimately answered; and the diffusion of knowledge, so astonishing in the last half-century, has rendered innumerable minds, variously gifted by nature, competent to be competitors or fellow-workers on the theatre of intellectual operation.

Nan Yar = Who am I?

Out of Control: The New Biology of Machines, Social Systems and the Economic World (1995), New Rules for the New Economy: 10 Radical Strategies for a Connected World (1999)