As in a tree, there is more sap in an Arm of the tree, than in a little sprig; but the sprig hath the same sap for kind that the Arm of the tree hath, and it all comes from the same root. So though there be more venom in some gross, crying sins, than in some others; yet there is no sin but hath the same sap, and the same venom, for the kind, that every sin hath, that the worst sin hath.
Jeremiah Burroughs, The Evil of Evils: The Exceeding Sinfulness of Sin
depravity, human-nature, poison, sin, the-heart-of-man, venom