“While it is not a hard thing to abstain from murder, but it is very difficult to avoid all passing fits of anger, which assail us at every moment. A man or woman can easily keep from adultery, often difficult to resist coveting them; easy to avoid bearing false witness in direct judgment, difficult to be perfectly truthful in conversation; easy to refrain from getting drunk, difficult to be absolutely sober; easy not to wish for a neighbor’s death, difficult not to wish anything contrary to his interests; easy to keep from slander, difficult to avoid all contempt.”