The explanation of my apparent inconsistency is that the precision of speech we employ, when abstract truth is critically investigated in philosophic discussion, is one thing; and that employed, when we are adapting our language entirely to popular thinking, is another.
 Marcus Tullius Cicero, On Duties (44 BC). copy citation

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Author Marcus Tullius Cicero
Source On Duties
Topic speech thinking
Date 44 BC
Language English
Reference
Note Translated by Walter Miller
Weblink http://www.constitution.org/rom/de_officiis.htm

Context

“But I am afraid someone may wonder why I am now separating the virtues — as if it were possible for anyone to be just who is not at the same time wise; for it is agreed upon among all philosophers, and I myself have often argued, that he who has one virtue has them all. The explanation of my apparent inconsistency is that the precision of speech we employ, when abstract truth is critically investigated in philosophic discussion, is one thing; and that employed, when we are adapting our language entirely to popular thinking, is another. And therefore I am speaking here in the popular sense, when I call some men brave, others good, and still others wise; for in dealing with popular conceptions we must employ familiar words in their common acceptation; and this was the practice of Panaetius likewise But let us return to the subject.
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