It is necessary, indeed, for a political leader to be an able speaker; but it is an ignoble thing for any man to admire and relish the glory of his own eloquence.
 Plutarch, Parallel Lives (c. 100 AD). copy citation

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Author Plutarch
Source Parallel Lives
Topic eloquence glory
Date c. 100 AD
Language English
Reference
Note Translated by A. H. Clough
Weblink http://www.gutenberg.org/files/674/674-h/674-h.htm

Context

“And at last we find him extolling not only his deeds and actions, but his orations also, as well those that were only spoken, as those that were published; as if he were engaged in a boyish trial of skill, who should speak best, with the rhetoricians, Isocrates and Anaximenes, not as one who could claim the task to guide and instruct the Roman nation, the Soldier full-armed, terrific to the foe. It is necessary, indeed, for a political leader to be an able speaker; but it is an ignoble thing for any man to admire and relish the glory of his own eloquence. And, in this matter, Demosthenes had a more than ordinary gravity and magnificence of mind, accounting his talent in speaking nothing more than a mere accomplishment and matter of practice, the success of which must depend greatly on the good-will and candor of his hearers, and regarding those who pride themselves on such accounts to be men of a low and petty disposition.” source