Page 43 bottom of the page last paragraph it says “Before you can select appropriate quotations, you need to have a sense of what you want to do with them”.  The author is trying to tell you that you should know what to do with your quotation when you find it and that you shouldn’t  just pick a quotation just because it looks or sounds good. it need to be able to support your statement or text and not because you think it is able to par good with authors and your the same way