“[Religion is] a state of heart which holds knowledge and affection in solution, not successively, but in unity. If you take away the affection, you have only dogmatism; if you take away knowledge, you have a mere spiritualism, a mere fancy, an idolatry. If you preach doctrine to a Christian, the affection springs spontaneously on the apprehension of the doctrine; if you preach the affection to him, he will immediately, and, perhaps unconsciously, hitch it on the doctrine; and this endorses the maxim that we ought to preach our doctrine practically, and our practice doctrinally.”

— Life and Letters if James Henley Thornwell, p. 100