A client (mandator) is not vicariously liable in delict for wrongful acts committed by their legal practitioner (mandatary) in the course of providing professional services, unless the client himself also committed a delict by actively participating in, directing, or having reasonable foresight of the wrongful conduct. The attorney-client relationship is one of mandate (mandatum), not employment or simple agency, and lawyers are independent professionals not subject to their clients' control for purposes of vicarious liability. In delictual claims based on the lex Aquilia, a plaintiff must plead and prove all essential elements including wrongfulness and fault (intention or negligence) with sufficient particularity to inform the defendant of the case to be met. Mere proof that a lawyer acted on behalf of a client and committed a wrong is insufficient without proof that the client's own conduct was wrongful and culpable.