“The more the concept of reason becomes emasculated, the more easily it lends itself to ideological manipulation and to propagation of even the most blatant lies. … Subjective reason conforms to anything.”
Source: Eclipse of Reason (1947), pp. 24-25.
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Max Horkheimer 61
German philosopher and sociologist 1895–1973Related quotes

Young India 1924-1926 (1927), p. 1285
1920s

Colour http://books.google.com/books?id=JHguFYrTEQ0C&q=%22It+is+said+of+money+that+it+is+more+easily+made+than+kept+and+this+is+true+of+many+things+such+as+friendship+and+even+life+itself+is+more+easily+got+than+kept%22&pg=PA141#v=onepage
Often paraphrased as "Friendship is like money, easier made than kept."
The Note-Books of Samuel Butler (1912), Part IX - A Painter's Views on Painting

Source: An Unquiet Mind: A Memoir of Moods and Madness

Source: "The End of Reason" (1941), p. 44.

The Tragic Sense of Life (1913), VI : In the Depths of the Abyss
Context: To all this, someone is sure to object that life ought to subject itself to reason, to which we will reply that nobody ought to do what he is unable to do, and life cannot subject itself to reason. "Ought, therefore can," some Kantian will retort. To which we shall demur: "Cannot, therefore ought not." And life cannot submit itself to reason, because the end of life is living and not understanding.

Source: The Other Side Of The Coin (2008), Chapter 10, Good Versus Evil, p. 304