Keep a recycling file. Whether in the process of moving material from an outline to the document you’re writing or editing a piece toward completion, it’s likely that you’ll be deleting some significant chunks of text. Instead of trashing them, put those sentences and paragraphs in a recycling file. “Unused” or “save for later” work just as well. Later in the revision process, you may find a place for that concept or quote. Or, it may spark a new project or be just the idea you need for the next essay you’re writing.