And here, also, it is clear that the will alone is the inner and true nature of man; the intellect , on the contrary, with its operations, which go on as regularly as the external world, stands to the will in the relation of something external to it, a mere tool.
 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 rich
Date 1819
Language English
Reference
Note Translated by R. B. Haldane and J. Kemp
Weblink http://www.gutenberg.org/files/40097/40097-h/40097-h.html

Context

“Therefore it is absurd and unjust if we are taken to task for our beliefs, thus for our knowledge: for we are obliged to regard this as something which, although it changes in us, is as little in our power as the events of the external world. And here, also, it is clear that the will alone is the inner and true nature of man; the intellect , on the contrary, with its operations, which go on as regularly as the external world, stands to the will in the relation of something external to it, a mere tool. High mental capacities have always been regarded as the gift of nature or the gods; and on that account they have been called Gaben , Begabung , ingenii dotes , gifts (a man highly gifted) , regarding them as something different from the man himself, something that has fallen to his lot through favour.” source