“Ideology knows the answer before the question has been asked.
Principles are something different: a set of values that have to be adapted to circumstances but not compromised away.”
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George Packer 14
American journalist and writer 1960Related quotes

“He who knows all the answers has not been asked all the questions.”

Source: Alone (1938), Ch. 12
Context: Part of me remained forever at Latitude 80 degrees 08 minutes South: what survived of my youth, my vanity, perhaps, and certainly my skepticism. On the other hand, I did take away something that I had not fully possessed before: appreciation of the sheer beauty and miracle of being alive, and a humble set of values. All this happened four years ago. Civilization has not altered my ideas. I live more simply now, and with more peace.
But a no-one with a crown of light about his head. He would remember a verse from Pindar: "Man is a dream about a shadow. But when some splendour falls upon him from God, a glory comes to him and his life is sweet."
Neb [No-one] (1985)

47 : The Question and its Answer, p. 78.
The Everything and the Nothing (1963)

Source: Speech http://hansard.millbanksystems.com/commons/1848/feb/22/expenditure-of-the-country in the House of Commons (22 February 1848).