“Enlightenment, designed to emancipate people from the power of ignorance and prejudice, will be ineffective and useless to the non-use of scientific achievements.”
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Zafar Mirzo 149
1972Related quotes

“Inexperience can be overcome, ignorance can be enlightened, but prejudice will destroy you.”
Source: The Black Gryphon

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!

Source: 1990s, Intelligent Design: The Bridge Between Science & Theology (1999), p. 224

1760s, A Dissertation on the Canon and Feudal Law (1765)

Interview (1961) http://www.radiodiaries.org/mandela/t_movement.html
1960s
Context: There are thousands of people who feel that it is useless and futile for us to continue talking peace and non-violence — against a government whose only reply is savage attacks on an unarmed and defenceless people. And I think the time has come for us to consider, in the light of our experiences at this day at home, whether the methods which we have applied so far are adequate.

“Happiness comes from the full use of one's power to achieve excellence.”
Thoughts on Man's Purpose in Life (1974)
Context: Happiness comes from the full use of one's power to achieve excellence. Life is potentially an empty hole, and there are few more satisfying ways of filling it than achieving and exercising excellence.
This principle of excellence is on which Americans seem to be losing, and at a time when the Nation stands in need of it. A lack of excellence implies mediocrity. And in a society that is willing to accept a standard of mediocrity, the opportunities for personal failure are boundless. Mediocrity can destroy us as surely as perils far more famous.
It is important that we distinguish between what it means to fail at a task and what it means to be mediocre. There is all the difference in the world between the life lived with dignity and style which ends in failure, and one which achieves power and glory, yet is dull, unoriginal, unreflective, and mediocre. In a real sense, what matters is not so much whether we make a lot of money or hold a prestigious job; what matter is that we seek out others with knowledge and enthusiasm — that we become people who can enjoy our own company.

“Prejudice is the child of ignorance…”
" On Prejudice http://www.blupete.com/Literature/Essays/Hazlitt/Prejudice.htm"
Men and Manners: Sketches and Essays (1852)

Letter (2 November 1917) to Lord Rothschild; this letter became known as the Balfour Declaration, quoted in Blanche E. C. Dugdale, Arthur James Balfour, First Earl of Balfour, K.G., O.M., F.R.S., Etc. 1906–1930 (London: Hutchinson & Co. Ltd, 1936), p. 171.