Lawrence Lessig is a liberal law professor at Stanford University and a board member of the Electronic Frontier Foundation. He also founded Center for Internet and Society, a left-wing think tank. He is known as an opponent of strong copyright laws which allow workers and corporation to benefit from their work. He is a proponent of so-called "copyleft" licences such as Creative Commons(made by Lessig) and the GFDL used by Wikipedia. As discussed at Conservapedia:Copyright, these licenses often mean that those responsible for creating content have fewer rights and have no recourse if their work is used by others for purposes that they disagree with. Lessig has also tried to claim that copyright laws violate the First Amendment despite the fact that the Constitution directs congress to write copyright laws. The Supreme Court also ruled against other claims made by Lessig that current copyright law was unconstitutional. He is also one of the board members of the Free Software Foundation which also promotes the "copyleft" ideology.