The science of human duty; the body of rules of duty drawn from this science; a particular system of principles and rules concerting duty, whether true or false; rules of practice in respect to a single class of human actions; as, political or social ethics; medical ethics.
Ethics is knowing the difference between what you have a right to do and what is right to do. Potter Stewart
In law a man is guilty when he violates the rights of others. In ethics he is guilty if he only thinks of doing so. Immanuel Kant
Without ethics, man has no future. This is to say, mankind without them cannot be itself. Ethics determine choices and actions and suggest difficult priorities. John Berger
A man without ethics is a wild beast loosed upon this world. Albert Camus
History shows that where ethics and economics come in conflict, victory is always with economics. Vested interests have never been known to have willingly divested themselves unless there was sufficient force to compel them. B. R. Ambedkar