Maximal forms of religious pluralism claim that all religions are equally true, or that one religion can be true for some and another for others. Most Christians hold this idea to be logically impossible from the Principle of contradiction. The two largest Christian branches, the Catholic Church and the Orthodox Church, both claim to be the "one true church" and that "outside the true Church there is no salvation"; Protestantism however, which has many different denominations, has no consistent doctrine in this regard, and has a variety of different positions regarding religious pluralism.