Yes.
If you have a sentence in mind, please post it and we'll be glad to comment on it.
Can you start a sentence with As?
9 answers
As said by Martin Luther king:" A lie cannot live."
Yes. That's good.
okay thanks Ms.Sue!
Change the colon to a comma, and it'll be perfect!
why wouldn't the colon be acceptable?
The part before the colon is not a complete sentence. It's a dependent (subordinate) clause.
oh I see it now thanks!
You're welcome!