Walter Frederic Adeney, The Greek and Eastern Churches (1908)
“ Emphasis on the distinction between the Divine and human natures in our Lord issued in Nestorianism. Insistence on the unity of His person pushed to an extreme led to the heresy known at the time as Eutychianism. In point of fact, however, another and a deeper tendency may be traced through each of these movements when we consider the motives that inspired them. The underlying motive of Nestorianism was interest in our Lord's humanity, His earthly life, His brotherly relations with mankind ”
