The human heart has so many crannies where vanity hides, so many holes where falsehood works, is so decked out with deceiving hypocrisy — that it often dupes itself!
— John Calvin
Keep your heart as you would keep a Garden. Your heart is a garden (Song of Solomon 4:12); weed all sin out of your heart. Among the flowers of the heart, weeds will be growing—the weeds of pride, malice, and covetousness: these grow without planting and cultivating. Therefore be weeding your heart daily by prayer, examination, and repentance.
— Thomas Watson