What you've created is threatening to destroy the sidewalk with its rhythmic audacity and funky perspicacity.

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Seven years ago, in a Four Seasons Hotel van with Bill Gates, I became involved in a heated argument over Gil-der's perspicacity.

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Scarcely more comprehensible is the argument that Germany must refrain from recognizing Croatia and Slovenia simply because other leading nations lack the courage or perspicacity to take this step.

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Born into humble circumstances in Scotland, this onetime bank clerk and schoolteacher had the amazing knowledge, perspicacity and stick-to-itiveness to organize the undertaking and push it on an irrevocable course to completion.

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Nassim Nicholas Taleb, author of The Black Swan (the bestselling econ-philosophy book, not the flick), is someone who has made just such an effort to grace the world with discrete shavings of his perspicacity.

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At the Frick, thanks mainly to Sterling Clark's perspicacity in buying in some depth from the auctions of Degas's work held soon after his death Clark apparently wished he'd bought more we can follow this enigmatic artist's evolution.

WSJ: Fine Lines | Frick Collection | Brooklyn Museum | by Karen Wilkin