 A political conception is not derived from any particular comprehensive doctrine, nor is it a compromise among the worldviews that happen to exist in society at the moment. Rather, a political conception is freestanding: its content is set out independently of the comprehensive doctrines that citizens affirm. Reasonable citizens, who want to cooperate with one another on mutually acceptable terms, will see that a freestanding political conception generated from ideas in the public political culture is the only basis for cooperation that all citizens can reasonably be expected to endorse. The use of coercive political power guided by the principles of a political conception of justice will therefore be legitimate.