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" the pursuit of our soul's satisfaction--our joy and delight and happiness--is not sin. Sin is the exact opposite: pursuing happiness where no lasting happiness can be found. "My people have committed two evils: they have forsaken me, the fountain of living waters, and hewed out cisterns for themselves, broken cisterns, that can hold no water" (Jer. 2:13, RSV). Sin is trying to quench our unquenchable soul-thirst anywhere but in God. Or, more subtly, sin is pursuing satisfaction in the right direction, but with lukewarm, halfhearted affections (Rev. 3:16). "
― John Piper , God's Passion for His Glory: Living the Vision of Jonathan Edwards (with the Complete Text of the End for Which God Created the World)