The man in whom genius lives and works is easily distinguished by his glance, which is both keen and steady, and bears the stamp of perception, of contemplation.
 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 perception 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

“While to the ordinary man his faculty of knowledge is a lamp to lighten his path, to the man of genius it is the sun which reveals the world. This great diversity in their way of looking at life soon becomes visible in the outward appearance both of the man of genius and of the ordinary mortal. The man in whom genius lives and works is easily distinguished by his glance, which is both keen and steady, and bears the stamp of perception, of contemplation. This is easily seen from the likenesses of the few men of genius whom Nature has produced here and there among countless millions. On the other hand, in the case of an ordinary man, the true object of his contemplation, what he is prying into, can be easily seen from his glance, if indeed it is not quite stupid and vacant, as is generally the case.” source