Never end a sentence with a preposition.
Never split an infinitive.
Never split a verb phrase.
Never begin a sentence with And or But.
Never write a one-sentence paragraph.
Never begin a sentence with Because.
Never use since to mean because.
Never use between with more than two objects.
Never use the first-person pronouns I and me.
Never use contractions.
Never use you in referring to your reader.
(Bryan A. Garner, A Dictionary of Modern Usage, Oxford, 1998)
