Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 535.
“Can you understand the soul of a man who never hesitated to take steps that would have the effect of hoodwinking people, who would use every trick of the markets to mislead, and who was at the same time scrupulous never to utter a direct lie on the most insignificant matter? Manderson was like that, and he was not the only one. I suppose you might compare the state of mind to that of a soldier who is personally a truthful man, but who will stick at nothing to deceive the enemy. The rules of the game allow it; and the same may be said of business as many business men regard it. Only with them it is always wartime.”
Source: Trent's Last Case (1912), Chapter XV: "Double Cunning"
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Edmund Clerihew Bentley 27
British writer 1875–1956Related quotes

1780s, Letter to Peter Carr (1787)
Context: He who made us would have been a pitiful bungler, if he had made the rules of our moral conduct a matter of science. For one man of science, there are thousands who are not. What would have become of them? Man was destined for society. His morality, therefore, was to be formed to this object. He was endowed with a sense of right and wrong, merely relative to this.

You Can Lead an Atheist to Evidence, But You Can't Make Him Think (2009)

“Oh, about beer I never lie. A man who lies about beer makes enemies.”
Jud, to Louis
Source: Pet Sematary (1983)

Therefore these words were a thorn in their eyes and a scourge on their backs.
Socratic Memorabilia, J. Flaherty, trans. (Baltimore: 1967), pp. 165-167.