An early heretic who taught unorthodox views about trinity, especially, in regards to Jesus Christ. He believed that because God is one, Jesus could not have also been truly God. Hence, he and his followers taught that Jesus was instead the highest created being of God. So according to Arianism, Christ is fully human, but not fully God. Arius and Arianism were condemned as heretical at the First Ecumenical Council (Nicaea) in A.D. 325.