on the contrary, persons of genius are often subject to violent emotions and irrational passions.
 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 passion genius
Date 1819
Language English
Reference
Note Translated by R. B. Haldane and J. Kemp
Weblink http://www.gutenberg.org/files/38427/38427-h/38427-h.html

Context

“in the province of which the Idea always lies, is directly opposed to rational or abstract knowledge, which is guided by the principle of the ground of knowing. It is also well known that we seldom find great genius united with pre-eminent reasonableness; on the contrary, persons of genius are often subject to violent emotions and irrational passions. But the ground of this is not weakness of reason, but partly unwonted energy of that whole phenomenon of will—the man of genius—which expresses itself through the violence of all his acts of will, and partly preponderance of the knowledge of perception through the senses and understanding over abstract knowledge, producing a decided tendency to the perceptible, the exceedingly lively impressions of which so far outshine colourless concepts, that they take their place in the guidance of action, which consequently becomes irrational.” source