Sola scriptura (Latin By Scripture alone) is one of five important slogans of the Protestant Reformation in the 16th century. Although there is no agreed-upon technical definition among Protestants, it generally meant that Scripture, as interpreted by the individual believer, is the only inerrant rule for deciding issues of faith and morals. The intention of the Reformation was to "correct" the Catholic Church by appeal to the uniqueness of the Bible's authority, and to reject Christian tradition as a source of original authority alongside the Bible or in addition to the Bible. This is in contrast to Prima scriptura, which holds that the Bible is the primary source of doctrine, but that understanding can be improved by reference to other sources.