Dr. Seuss

"So the writer who breeds more words than he needs, is making a chore for the reader who reads."

Stephen King

Any word you have to hunt for in a thesaurus is the wrong word. There are no exceptions to this rule.

C. S. Lewis

Don't use words too big for the subject. Don't say 'infinitely' when you mean 'very'. Otherwise you'll have no word left when you want to talk about something really infinite.