If a man of more than ordinary ability tries to do the work of two men, he is apt to find that the two men are mediocrities.
 Honoré de Balzac, Lost Illusions (1843). copy citation

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Author Honoré de Balzac
Source Lost Illusions
Topic mediocrity work
Date 1843
Language English
Reference
Note Translated by Ellen Marriage
Weblink https://www.gutenberg.org/cache/epub/13159/pg13159.html

Context

“As a result of this double life, the attorney acquired the peculiar intellectual defects of the barrister, and retained the heavy responsibilities of the attorney. He grew talkative and fluent, and lost his lucidity of judgment, the first necessity for the conduct of affairs. If a man of more than ordinary ability tries to do the work of two men, he is apt to find that the two men are mediocrities. The Paris attorney never spends himself in forensic eloquence; and as he seldom attempts to argue for and against, he has some hope of preserving his mental rectitude. It is true that he brings the balista of the law to work, and looks for the weapons in the armory of judicial contradictions, but he keeps his own convictions as to the case, while he does his best to gain the day.” source