The advice to omit needless words should not be confused with the puritanical edict that all writers must pare every sentence down to the shortest, leanest, most abstemious version possible. Even writers who prize clarity don’t do this. That’s because the difficulty of a sentence depends not just on its word count but on its geometry. Good writers often use very long sentences, and they garnish them with words that are, strictly speaking, needless. But they get away with it by arranging the words so that a reader can absorb them a phrase at a time, each phrase conveying a chunk on conceptual structure.
- Steven Pinker, The Sense of Style: The Thinking Person’s Guide to Writing in the 21st Century