The Danger of a Shallow Unity of Thought
If you give due attention to the difficulties involved in each of these divinely revealed doctrines, you would be able a priori to anticipate all possible heresies which have been evolved in the course of history. All truth is catholic: it embraces many elements, wide horizons, and therefore involves endless difficulties and apparent inconsistencies. The mind of man seeks for unity, and tends prematurely to force a unity in the sphere of his imperfect knowledge by sacrificing one element of the truth or other to the rest. This is eminently true of all rationalists. They are clear and logical at the expense of being superficial and half-orbed. Heresy, from the Greek αἵρεσις, means an act of choice, and hence division, the picking and choosing a part, instead of comprehensively embracing the whole of the truth. Almost all heresies are partial truths—true in what they affirm, but false in what they deny.
Popular Lectures on Theological Themes
p. 222-223
Archibald Alexander Hodge, Popular Lectures on Theological Themes (Philadelphia: Presbyterian Board of Publication, 1887)