Thus the council rejected both Nestorianism and Eutychianism, and stood upon the doctrine that Christ had two natures, each perfect in itself and each distinct from the other, yet perfectly united in one person, who was at once both God and man.
The great opponent of their Christology, which was known as Nihilianism, was the German scholar Gerhoch, who, for his bold assertion of the perfect interpenetration of deity and humanity in Christ, was accused of Eutychianism.
As Eutychianism is the doctrine that the God-man has only one nature, so Nestorianism is the doctrine that He has two complete persons.
So far as Nestorius himself is concerned, however, it is certain that he never formulated any such doctrine;2 nor does any recorded utterance of his, however casual, come so near the heresy called by his name as Cyril's deliberately framed third anathema (that regarding the "physical union" of the two hypostases or natures) approaches Eutychianism.