If I must serve for an instrument of deceit, let it be at least with a safe conscience: I will not be reputed a servant either so affectionate or so loyal as to be fit to betray any one: he who is unfaithful to himself, is excusably so to his master.
 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 deceit conscience
Date 1580
Language English
Reference
Note Translated by Charles Cotton
Weblink http://www.gutenberg.org/files/3600/3600-h/3600-h.htm

Context

“Philippides, in my opinion, answered King Lysimachus very discreetly, who, asking him what of his estate he should bestow upon him? “ What you will, ” said he, “ provided it be none of your secrets. ” If I must serve for an instrument of deceit, let it be at least with a safe conscience: I will not be reputed a servant either so affectionate or so loyal as to be fit to betray any one: he who is unfaithful to himself, is excusably so to his master. But they are princes who do not accept men by halves, and despise limited and conditional services: I cannot help it: I frankly tell them how far I can go; for a slave I should not be, but to reason, and I can hardly submit even to that.” source