The flatterer is like a man who should make no comment on the speech of a silly and ridiculous orator, but should find fault with his voice, and chide him for injuring his throat by drinking cold water; or like a person bidden to read some wretched composition, who should merely find fault with the thickness of the paper, and call the copyist a dirty and careless fellow.
 Plutarch, Moralia (c. 100 AD). copy citation

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Author Plutarch
Source Moralia
Topic speech reading
Date c. 100 AD
Language English
Reference
Note Translated by Arthur Richard Shilleto
Weblink http://www.gutenberg.org/files/23639/23639-h/23639-h.htm

Context

“just as if the trainer in a gymnasium were to allow the athlete to get drunk and live in debauchery,415 174and yet be vexed at the condition of his oil-flask or strigil if out of order; or as if the schoolmaster scolded a boy about his tablet and pen, but paid no attention to a solecism or barbarism. The flatterer is like a man who should make no comment on the speech of a silly and ridiculous orator, but should find fault with his voice, and chide him for injuring his throat by drinking cold water; or like a person bidden to read some wretched composition, who should merely find fault with the thickness of the paper, and call the copyist a dirty and careless fellow. So too when Ptolemy seemed to desire to become learned, his flatterers used to spin out the time till midnight, disputing about some word or line or history, but not one of them all objected to his cruelty and outrages, his torturing and beating people to death.416 Just as if, when a man has tumours and fistulas, one were to cut his hair and nails with a surgeon's knife, so flatterers use outspokenness only in cases where it gives no pain or distress.” source