The Kaili Formation is a approximately 200 meter thick stratigraphic formation which was deposited during the Lower and Middle Cambrian (~513 to 506 million years ago). The formation is named after the city Kaili in the Guizhou province of southwest China.
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“The moral virtues, then, are produced in us neither by nature nor against nature. Nature, indeed, prepares in us the ground for their reception, but their complete formation is the product of habit.”
—Aristotle (384322 B.C.)