Nebbia v. New York
United States Supreme Court
291 U.S. 502, 54 S.Ct. 505, 78 L.Ed. 940 (1934)
[Under] our form of government the use of property and the making of contracts are normally matters of private and not of public concern. The general rule is that both shall be free of governmental interference. But neither property rights nor contract rights are absolute; for government cannot exist if the citizen may at will use his property to the detriment of his fellows, or exercise his freedom of contract to work them harm. Equally fundamental with the private right is that of the public to regulate it in the common interest.