Clarity in Nonfiction Writing

Any person who can speak English grammatically can learn to write nonfiction. Nonfiction writing is not difficult, though it is a technical skill. What you need for nonfiction writing is what you need for life in general: an orderly method of thinking. Writing is literally only the skill of putting down on paper a clear thought, in clear terms. Everything else, such as drama and "jazziness," is merely the trimmings. I once said that the three most important elements of fiction are plot, plot, and plot. The equivalent in nonfiction is: clarity, clarity, and clarity.

Ayn Rand