Wonderful! My conscience tells me that abortion is always the unjust taking of an innocent human life, and should never be permitted for anyone, under any circumstances. Are you going to let me follow my conscience, or aren't you?
(And, BTW, if you're going to tell me that my conscience only binds me, and doesn't permit me to make moral judgements about others' behavior, I'm going to ask you exactly why you think what happened in New York on September 11 was wrong. After all, it wasn't against the terrorists' consciences, so where do you get off passing judgement on it?)