“Inexperience can be overcome, ignorance can be enlightened, but prejudice will destroy you.”

Source: Psychology and Industrial Efficiency (1913), p. 133

Introduction
New Era Community (1926)
Context: We are dissipating superstition, ignorance and fear. We are forging courage, will and knowledge.
Every striving toward enlightenment is welcome. Every prejudice, caused by ignorance, is exposed.
Thou who dost toil, are not alive in thy consciousness the roots of cooperation and community?
If this flame has already illumined thy brain, adopt the signs of the Teaching of Our mountains.
Thou who dost labor, do not become wearied puzzling over certain expressions. Every line is the highest measure of simplicity.
Greeting to workers and seekers!

1950s
Source: Childhood's End (1953), p. 15
Context: Science can destroy religion by ignoring it as well as by disproving its tenets. No one ever demonstrated, so far as I am aware, the non-existence of Zeus or Thor — but they have few followers now.

" On Prejudice http://www.blupete.com/Literature/Essays/Hazlitt/Prejudice.htm"
Men and Manners: Sketches and Essays (1852)

“If This Goes On—” Chapter 10, p. 426
The Past Through Tomorrow (1967)
Source: Revolt in 2100/Methuselah's Children
Context: “Do you seriously expect to start a rebellion with picayune stuff like that?”
“It’s not picayune stuff, because it acts directly on their emotions, below the logical level. You can sway a thousand men by appealing to their prejudices quicker than you can convince one man by logic. It doesn’t have to be a prejudice about an important matter either.

Source: The Laundry Files, The Fuller Memorandum (2010), Chapter 5, “Lost in Committee” (p. 87)

Vorurteil stützt die Throne, Unwissenheit die Altäre.
Source: Aphorisms (1880/1893), p. 65.