Only when the will comes into play is the man really present: now he becomes warm, nay, it often happens, hot. It is always the will to which we ascribe the warmth of life
 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 warmth present
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

“So long as in a conversation the intellect alone is active it remains cold. It is almost as if the man himself were not present. Moreover, he cannot then, properly speaking, compromise himself, but at the most can make himself ridiculous. Only when the will comes into play is the man really present: now he becomes warm, nay, it often happens, hot. It is always the will to which we ascribe the warmth of life; on the other hand, we say the cold understanding, or to investigate a thing coolly, i.e., to think without being influenced by the will. If we attempt to reverse the relation, and to regard the will as the tool of the intellect, it is as if we made the smith the tool of the hammer.” source