Going through some old stuff, I came across the following quote today. I remember reading it a few months ago, having really been struck by it. It has the same effect today.

All gracious affections that are a sweet odor to Christ, and that fill the soul of a Christian with a heavenly sweetness and fragrancy, are broken hearted affections. A truly Christian love, either to God or men, is a humble broken hearted love. The desires of the saints, however earnest, are humble desires. Their hope is a humble hope; and their joy, even when it is unspeakable, and full of glory, is a humble broken hearted joy, and leaves the Christian more poor in spirit; and more like a little child, and more disposed to a universal lowliness of behavior.
-Jonathan Edwards (You can find the source here).