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
The more moral the people are in their business dealings, the less paperwork you need, the more handshakes you can have, the more the wheels of capitalism work better because there's trust in the marketplace. Business ethics is not a joke. And, in fact, I think most businesses that I've dealt with encourage exactly that type of behavior. Rick Santorum
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
To me, it really seems visible today that ethics is not something exterior to the economy, which, as technical matter, could function on its own; rather, ethics is an interior principle of the economy itself, which cannot function if it does not take account of the human values of solidarity and reciprocal responsibility. Pope Benedict XVI