For the intellect has given up its nature to please the will: the man now imagines what does not exist.
 Arthur Schopenhauer, The World as Will and Representation (1819). copy citation

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Author Arthur Schopenhauer
Source The World as Will and Representation
Topic intellect
Date 1819
Language English
Reference
Note Translated by R. B. Haldane and J. Kemp
Weblink http://www.gutenberg.org/files/40868/40868-h/40868-h.html

Context

“If, on the contrary, in some particular case, the resistance and struggles of the will against the apprehension of some knowledge reaches such a degree that that operation is not performed in its integrity, then certain events or circumstances become for the intellect completely suppressed, because the will cannot endure the sight of them, and then, for the sake of the necessary connection, the gaps that thus arise are filled up at pleasure; thus madness appears. For the intellect has given up its nature to please the will: the man now imagines what does not exist. Yet the madness which has thus arisen is now the lethe of unendurable suffering; it was the last remedy of harassed nature, i.e., of the will. Let me mention here in passing a proof of my view which is worth noticing.” source