To speak more of one’s self than is really true is not always mere presumption
 Michel de Montaigne, The Essays of Michel de Montaigne (1580). copy citation

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Author Michel de Montaigne
Source The Essays of Michel de Montaigne
Topic self-knowledge
Date 1580
Language English
Reference
Note Translated by Charles Cotton
Weblink http://www.gutenberg.org/files/3600/3600-h/3600-h.htm

Context

“To speak less of one’s self than what one really is is folly, not modesty; and to take that for current pay which is under a man’s value is pusillanimity and cowardice, according to, Aristotle. No virtue assists itself with falsehood; truth is never matter of error. To speak more of one’s self than is really true is not always mere presumption; ‘tis, moreover, very often folly; to, be immeasurably pleased with what one is, and to fall into an indiscreet self-love, is in my opinion the substance of this vice. The most sovereign remedy to cure it, is to do quite contrary to what these people direct who, in forbidding men to speak of themselves, consequently, at the same time, interdict thinking of themselves too.” source