To learn that a man has said or done a foolish thing is nothing: a man must learn that he is nothing but a fool, a much more ample, and important instruction.
 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 learning
Date 1580
Language English
Reference
Note Translated by Charles Cotton
Weblink http://www.gutenberg.org/files/3600/3600-h/3600-h.htm

Context

“In all my other errors I do the same, and find from this rule great utility to life; I regard not the species and individual as a stone that I have stumbled at; I learn to suspect my steps throughout, and am careful to place them right. To learn that a man has said or done a foolish thing is nothing: a man must learn that he is nothing but a fool, a much more ample, and important instruction. The false steps that my memory has so often made, even then when it was most secure and confident of itself, are not idly thrown away; it vainly swears and assures me I shake my ears; the first opposition that is made to its testimony puts me into suspense, and I durst not rely upon it in anything of moment, nor warrant it in another person’s concerns:” source