Peter Siviglia said this quote

“ 5:3 Do Not Wither within Your Area of Expertise...But the lawyer must not allow the client to make a decision that the lawyer believes is wrong without a forceful and effective presentation by the lawyer of his or her position on the subject. When the matter is within the sphere of the lawyer's expertise, the lawyer must not permit the fear of being wrong to devour the lawyer's obligation to urge a course of action which the lawyer believes to be the best. (p.58) ”