Collection of traits necessary for "the achievement of great things," as theorized by Machiavelli (5)

I believe the answer is:

virtu

(Other definitions for virtu that I've seen before include "Curios" , "Connoisseurship" , "Objects of art" , "Love of the fine arts" , "Knowledge of fine arts" .)

I've seen this clue in The New York Times.

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