Several different sayings of the wise fill this chapter. I think the point of verses 8 & 9 is that a bad reputation is not easy to overcome. Verses 11 & 12 just simply mean we should rescue the innocent when we are able. This chapter shows us that one result of biblical wisdom is that we become mature people. A person of character does not rejoice over the suffering of enemies, tells the truth, lives within his means, is generous but is not sucked into throwing away his money, and can love faithfully.