“Indeed rhetoricians are permitted to lie about historical matters so they can speak more subtly.”
Brutus, 42
Original
Quidem concessum est rhetoribus ementiri in historiis ut aliquid dicere possint argutius.
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Marcus Tullius Cicero 180
Roman philosopher and statesman -106–-43 BCRelated quotes

“The more you speak of yourself, the more you are likely to lie;”
As quoted in Aphorisms and Reflections on Men, Morals, and Things, 1800, p. 4. http://books.google.com/books?id=vFJFAAAAYAAJ&lpg=PA4&ots=ZtdzIH54NC&dq=inauthor%3Ajohann%20inauthor%3Azimmermann%20%22the%20more%20you%20speak%20of%20yourself%22&pg=PA4#v=onepage&q=inauthor:johann%20inauthor:zimmermann%20%22the%20more%20you%20speak%20of%20yourself%22&f=false|
Context: The more you speak of yourself, the more you are likely to lie; say but little, 'twill scarcely gain belief; so strong are partiality and envy.

“We have the right to lie, but not about the heart of the matter.”

As quoted in The Histories by Herodotus, 3.72
The validity of the quote is questionable. http://www.shsu.edu/~his_ncp/Heropers.html
Attributed

Our Federal Union (1975), p. 248
General sources

Carl Kozlowski (September 11, 2008) "Taste in the making: Tool’s Maynard James Keenan shifts his focus from writing dark lyrics to creating zesty wines" http://www.pasadenaweekly.com/cms/story/detail/taste_in_the_making/6378/, Pasadena Weekly. Southland Publishing.

“An artist cannot speak about his art any more than a plant can discuss horticulture.”
As quoted in Newsweek (16 May 1955) Variant translation: Asking an artist to talk about his work is like asking a plant to discuss horticulture.

(Berlin Institute of Advanced Studies, Nov 2005).
Attributed