Theologian Willem Christiaan van Manen of the Dutch school of radical criticism noted various anachronisms in the Pauline epistles. Van Manen claimed that they could not have been written in their final form earlier than the 2nd century. He also noted that the Marcionite school was the first to publish the epistles, and that Marcion ( – ) used them as justification for his gnostic and docetic views that Jesus' incarnation was not in a physical body. Van Manen also studied Marcion's version of Galatians in contrast to the canonical version, and argued that the canonical version was a later revision which de-emphasized the Gnostic aspects.