This document discusses using rational, discriminating, and judicious judgment when writing. It advises that writers must first evaluate their own ideas and choose the most important one to control each sentence. Without making a clear choice, writing will lack style. The document provides examples of unclear sentences and rewrites them to have a dominant idea. It also discusses using parallel structures when ideas are equally important to show their equality. Overall, the document encourages writers to thoughtfully evaluate and structure their ideas for better style.