“It is... becoming obvious to them that the cause must lie in their own ignorance, and in that they have allowed themselves to be misinformed, influenced and used.”

Correspondence, Letters to George Sand

From Terrorism & Tyranny: Trampling Freedom, Justice and Peace to Rid the World of Evil (Palgrave, 2003) http://www.jimbovard.com/Epigrams%20page%20Terrorism%20&%20Tyranny.htm

Joseph Schumpeter, History of Economic Analysis, 1945. p. 27

Letter to W.T. Barry http://press-pubs.uchicago.edu/founders/documents/v1ch18s35.html (4 August 1822), in The Writings of James Madison (1910) edited by Gaillard Hunt, Vol. 9, p. 103; these words, using the older spelling "Governours", are inscribed to the left of the main entrance, Library of Congress James Madison Memorial Building.
1820s
Context: A popular Government without popular information, or the means of acquiring it, is but a Prologue to a Farce or a Tragedy, or perhaps both. Knowledge will forever govern ignorance: And a people who mean to be their own Governors, must arm themselves with the power which knowledge gives.

Source: Born of the Night

Source: A Bend in the River

Falsehood in Wartime (1928), Introduction
Context: A Government which has decided on embarking on the hazardous and terrible enterprise of war must at the outset present a one-sided case in justification of its action, and cannot afford to admit in any particular whatever the smallest degree of right or reason on the part of the people it has made up its mind to fight. Facts must be distorted, relevant circumstances concealed, and a picture presented which by its crude colouring will persuade the ignorant people that their Government is blameless, their cause is righteous, and that the indisputable wickedness of the enemy has been proved beyond question. A moment's reflection would tell any reasonable person that such obvious bias cannot possibly represent the truth. But the moment's reflection is not allowed; lies are circulated with great rapidity. The unthinking mass accept them and by their excitement sway the rest. The amount of rubbish and humbug that pass under the name of patriotism in war-time in all countries is sufficient to make decent people blush when they are subsequently disillusioned.

Spoken on his return to India from England as recorded in From Colombo to Almora (1904), Calcutta, p. 221
Context: No one ever landed on English soil with more hatred in his heart for a race than I did for the English, and, on this platform, are present English friends who can bear witness to the fact, but the more I lived among them, saw how the machine is working, the English national life, mixed with them, found where the heart-beat of the nation was, the more I loved them. There is none among you here present, my brothers, who loves the English people more than I do. You have to see what is going on there, and you have to mix with them. As the philosophy, our national philosophy of the Vedanta, has summarised all misfortune, all misery from that one cause, ignorance, herein also we must understand that the difficulties that arise between us and the English people are mostly due to that ignorance; we do not know them, they do not know us.

Pilgrim’s Regress 63
The Pilgrim's Regress (1933)