She undersold him so relentlessly and delivered, with secret groans, such an excellent quality of lumber to prove her probity that he was soon bankrupt.
There are no more uses of "probity" in the book.
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I had admired his journals inordinately, and had considered Gide’s probity and relentless self-dissection to be part of one of the truly triumphant feats of the civilized twentieth-century mind.
William Styron -- Sophie’s Choice
It was my first time in Amsterdam; I’d seen almost nothing of the city and yet the room itself, in its bleak, drafty, sunscrubbed beauty, gave a keen sense of Northern Europe, a model of the Netherlands in miniature: whitewash and Protestant probity, co-mingled with deep-dyed luxury brought in merchant ships from the East.