2409 Even if it does not contradict the provisions of civil law, any form of unjustly taking and keeping the property of others is against the seventh commandment: thus, deliberate retention of goods lent or of objects lost; business fraud; paying unjust wages; forcing up prices by taking advantage of the ignorance or hardship of another.192 (1867) The following are also morally illicit: speculation in which one contrives to manipulate the price of goods artificially in order to gain an advantage