Whether a buyer who possesses exclusive information about an external event affecting a commodity's market price must disclose that information to the seller before purchasing the commodity.
Holding
No. Organ had no legal duty to disclose the peace news merely because it was material to the tobacco's price.
Reasoning
Chief Justice Marshall distinguished information about extrinsic circumstances affecting market value from deception about the commodity itself. The peace treaty did not concern a defect, quality, title, or condition of the tobacco; it was outside information expected to alter the market price.
The Court concluded that a contrary rule would be difficult to confine within workable limits when both parties have access to the means of obtaining intelligence. A party may lawfully benefit from superior diligence or good fortune in acquiring market information.
The Court nevertheless made clear that commercial bargaining has a boundary: neither party may say or do anything tending to impose upon the other. Silence alone did not create a general duty to reveal the news, but affirmative conduct designed to mislead could invalidate the transaction.