First, think clearly
Quotation of the Day (HT Garner’s Usage Tip of the Day):
As your first object is to make yourself understood, the worst mistake you can make is to be misunderstood. This can come about through ignorance of the rules of grammar, but it is even more likely to come about through foolishness of thought.
S.P.B. Mais, The Writing of English 235 (1935).