In writing, what is not said can be just as important as what is. Over at the New Yorker, John McPhee discusses the art of choosing what to include and what to omit from a piece:
Writing is selection. Just to start a piece of writing you have to choose one word and only one from more than a million in the language. Now keep going. What is your next word? Your next sentence, paragraph, section, chapter? Your next ball of fact. You select what goes in and you decide what stays out. At base you have only one criterion: If something interests you, it goes in—if not, it stays out.
