  Our best hope to avoid sin is to will what is right for the right reasons. However, when it comes to discovering what is right, and therefore what ought to be willed, we start out at a disadvantage. The human mind naturally has the power to discern good and evil (Sen 253.10; IGP II 4), but one of the effects of the Fall is that our rational capacities have been clouded and diminished. Before the Fall the senses were subject to reason; after the Fall this is reversed (Sen 253.12-15), for since then the mind has become more closely attached and even enslaved to the body. This is the fomes of sin, a carnal weakness that clouds our reason and makes us more inclined to sin (Sen 246.39).  Fear, not reason, is the key for William, since "fear is the beginning of all wisdom" (Sen. 276.1). William describes three kinds of fear (Sen 276.17-34). First is the natural fear of danger and pain; even Jesus was subject to this fear. Second is fear of losing material things or the fear of punishment in hell. This fear shows that one values comfort and material things more that goodness and justice.  People motivated by this second fear will act rightly out of fear of losing material goods or fear of the torments of hell, but not out of good or right intention: "he does not merit grace who serves not his love of justice but his love of things or his fear of punishment" (Sen 261.23-25). Third is the fear that arises from respect for God's justice and power. This respectful fear of God, with knowledge of our own weakness and fallibility, "is better called the love of God" (Sen 276.39-43). This humble fear of God should be our guide to what is right.