The shrewd guess, the fertile hypothesis, the courageous leap to a tentative conclusion-these are the most valuable coins of the thinker at work. But in most schools guessing is heavily penalized and is associated somehow with laziness.

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Boundless in your charity, but shrewd and cautious as a lender, you delight all those today whom you made beggars the day before.

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The cycle of the machine is now coming to an end. Man has learned much in the hard discipline and the shrewd, unflinching grasp of practical possibilities that the machine has provided in the last three centuries: but we can no more continue to live in the world of the machine than we could live successfully on the barren surface of the moon.

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By means of shrewd lies, unremittingly repeated, it is possible to make people believe that heaven is hell -- and hell heaven. The greater the lie, the more readily it will be believed.

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Never say anything to hurt anyone. Moreover . . . refrain from double talk, from shrewd and canny remarks that are designed to advance our interests at someone's disadvantage. We are to turn our back upon evil, and in every way possible, do good, help people and bring blessings into their lives.

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Man is a shrewd inventor, and is ever taking the hint of a new machine from his own structure, adapting some secret of his own anatomy in iron, wood, and leather, to some required function in the work of the world.

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When people put their ballots in the boxes, they are, by that act, inoculated against the feeling that the government is not theirs. They then accept, in some measure, that its errors are their errors, its aberrations their aberrations, that any revolt will be against them. It's a remarkably shrewd and rather conservative arrangement when one thinks of it.

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The shrewd guess, the fertile hypothesis, the courageous leap to a tentative conclusion—these are the most valuable coin of the thinker at w...

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Take from a man his reputation for probity, and the more shrewd and clever he is, the more hated and mistrusted he becomes.

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Be mild with the mild, shrewd with the crafty, confiding to the honest, rough to the ruffian, and a thunderbolt to the liar. But in all this, never be unmindful of your own dignity.

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Matthew 10:16:
'I am sending you out like sheep among wolves. Therefore be as shrewd as snakes and as innocent as doves.'
(NIV)
Behold, I am sending you out like sheep in the midst of wolves; be wary and wise as serpents, and be innocent (harmless, guileless, and without falsity) as doves. [Gen. 3:1.](AMP)
Behold, I send you forth as sheep in the midst of wolves: be ye therefore wise as serpents, and harmless as doves.
(KJV)

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Anyone inexperienced puts faith in every word, but the shrewd one considers his steps.

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For every man that Bolingbroke hath pressed To lift shrewd steel against our golden crown,...

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We shall find of him A shrewd contriver; and, you know, his means,...

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We shouldn't have to be burdened with all the technicalities that come up from time to time with shrewd, smart lawyers interpreting what the laws or what the Constitution may or may not say.

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Be not curious in unnecessary matters: for more things are shrewd unto thee than men understand.

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Every spirit makes its house, and we can give a shrewd guess from the house to the inhabitant.

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A wise man knows everything; a shrewd one, everybody.

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