for the sight never intimates to the mind that a finger is other than a finger.
 Plato, The Republic. copy citation

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Author Plato
Source The Republic
Topic sight mind
Date
Language English
Reference
Note Translated by Benjamin Jowett
Weblink http://www.gutenberg.org/files/1497/1497-h/1497-h.htm

Context

“Each of them equally appears a finger, whether seen in the middle or at the extremity, whether white or black, or thick or thin—it makes no difference; a finger is a finger all the same. In these cases a man is not compelled to ask of thought the question what is a finger? for the sight never intimates to the mind that a finger is other than a finger. True. And therefore, I said, as we might expect, there is nothing here which invites or excites intelligence. There is not, he said. But is this equally true of the greatness and smallness of the fingers?” source