“This son of Sirach even says — I saw it but just now: 'Take heed of thy friends'; not, observe, thy seeming friends, thy hypocritical friends, thy false friends, but thy friends, thy real friends — that is to say, not the truest friend in the world is to be implicitly trusted.”

Source: The Confidence-Man: His Masquerade (1857), Ch. 45
Context: I cannot tell you how thankful I am for your reminding me about the apocrypha here. For the moment, its being such escaped me. Fact is, when all is bound up together, it's sometimes confusing. The uncanonical part should be bound distinct. And, now that I think of it, how well did those learned doctors who rejected for us this whole book of Sirach. I never read anything so calculated to destroy man's confidence in man. This son of Sirach even says — I saw it but just now: 'Take heed of thy friends'; not, observe, thy seeming friends, thy hypocritical friends, thy false friends, but thy friends, thy real friends — that is to say, not the truest friend in the world is to be implicitly trusted. Can Rochefoucault equal that? I should not wonder if his view of human nature, like Machiavelli's, was taken from this Son of Sirach. And to call it wisdom — the Wisdom of the Son of Sirach! Wisdom, indeed! What an ugly thing wisdom must be! Give me the folly that dimples the cheek, say I, rather than the wisdom that curdles the blood. But no, no; it ain't wisdom; it's apocrypha, as you say, sir. For how can that be trustworthy that teaches distrust?