“Parents always live a less pure life than their children, because they condone everything they do. The ability to condone everything in oneself but practically nothing in one's children is the boon that "experience" bestows on humanity. What parents call experience is really nothing but attempts, successful to the point of sheer cynicism, to belie everything which they found pure, true and right when they were young. They themselves don't notice the awful cynicism behind this incessant talk of "experience" being the highest aim in life: they only notice "inexperience" in their children, that is, the form of inexperience called purity and integrity, and then they get annoyed.”

"The Parent"; paraphrased variants:
Children aren't happy without something to ignore, and that's what parents were created for.
Parents were invented to make children happy by giving them something to ignore.
Happy Days (1933)

Source: A Prisoner of Birth

Part 3, Ch. 2 The Totalitarian Movement, page 80 https://books.google.de/books?id=I0pVKCVM4TQC&pg=PT104&dq=A+mixture+of+gullibility+and+cynicism+had+been+an+outstanding+characteristic+of+mob+mentality+before+it+became+an+everyday+phenomenon+of+masses.&hl=de&sa=X&redir_esc=y#v=onepage&q=A%20mixture%20of%20gullibility%20and%20cynicism%20had%20been%20an%20outstanding%20characteristic%20of%20mob%20mentality%20before%20it%20became%20an%20everyday%20phenomenon%20of%20masses.&f=false
The Origins of Totalitarianism (1951)
Context: A mixture of gullibility and cynicism had been an outstanding characteristic of mob mentality before it became an everyday phenomenon of masses. In an ever-changing, incomprehensible, world the masses had reached the point where they would, at the same time, believe everything and nothing, think that everything is possible and that nothing was true. The mixture in itself was remarkable enough, because it spelled the end of the illusion that gullibility was a weakness of unsuspecting primitive souls and cynism the vice of superior and refined minds. Mass propaganda discovered that its audience was ready at all times to believe the worst, no matter how absurd, and did not particularly object to being deceived because it held every statement to be a lie anyhow. The totalitarian mass leaders based their propaganda on the correct psychological assumption that, under such conditions, one could make people believe the most fantastic statements one day, and trust if the next day they were given irrefutable proof of their falsehood, they would take refuge in cynicism; instead of deserting the leaders who had lied to them, they would protest that they had known all along the statement was a lie and would admire the leaders for their superior tactical cleverness.

Source: Extremely Loud and Incredibly Close

D'ordinaire, ceux qui gouvernent les enfants ne leur pardonnent rien, et se pardonnent tout à eux-mêmes.
Traité de l'éducation des filles, ch. 5, cited from De l'éducation des filles, dialogues des morts et opuscules divers (Paris: Firmin Didot, 1857) p. 15; translation from Selections from the Writings of Fénelon (Boston: Hilliard, Gray, Little and Wilkins, 1829) p. 137. (1687).

1770s, African Slavery in America (March 1775)

Source: Henri Cartier-Bresson: Interviews and Conversations, 1951-1998, Conversation. Interview with Byron Dobell (1957), p. 38