As we rise in the scale of beings to those, which have a rational and moral nature, to those, who are kindred in race and are perhaps kindred by the nearer relationship of family ties, we shall experience the exercise of love on the same principle. We do not deny, that we shall be susceptible of a natural love. We know that we shall be. But what we mean to say is, that our love, whether purely natural and founded on the relations we sustain to the object, or whether an acquired love and resting wholly upon the deliberate perception of its amiable qualities, will be perfectly subordinate to the love of God and will be regulated by it. It would perhaps be a concise expression of the fact to say, whatever specific modifications our love may assume under the operation of natural causes, that we shall love all things IN AND FOR GOD. And if we are required in the first instance to love God with ALL our heart, it does not clearly appear when we fulfill the divine requisition, how we can love our neighbor or anything else in any other way than this.
— edited from The Interior or Hidden Life (1844) Part 1, Chapter 13.