What considerations and objects are lawful and what not

What considerations and objects are lawful, and what not. —The consideration or object of an agreement is lawful, unless-it is forbidden by law; or is of such a nature that, if permitted, it would defeat the provisions of any is fraudulent; or involves or implies injury to the person or property of another; or the Court regards it as immoral or opposed to public policy. In each of these cases, the consideration or object of an agreement is said to be unlawful.